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48931399 = 1189151331
BaseRepresentation
bin1011101010101…
…0001001000111
310102001222021001
42322222021013
5100011301044
64504434131
71132624066
oct272521107
9112058231
1048931399
1125690980
1214478947
13a1a2bba
1466da1dd
1544682d4
hex2eaa247

48931399 has 16 divisors (see below), whose sum is σ = 54501120. Its totient is φ = 43560000.

The previous prime is 48931391. The next prime is 48931417. The reversal of 48931399 is 99313984.

48931399 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 48931399 - 23 = 48931391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48931391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147664 + ... + 147994.

It is an arithmetic number, because the mean of its divisors is an integer number (3406320).

Almost surely, 248931399 is an apocalyptic number.

48931399 is a deficient number, since it is larger than the sum of its proper divisors (5569721).

48931399 is a wasteful number, since it uses less digits than its factorization.

48931399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582.

The product of its digits is 209952, while the sum is 46.

The square root of 48931399 is about 6995.0982123198. The cubic root of 48931399 is about 365.7597211573.

It can be divided in two parts, 489 and 31399, that multiplied together give a triangular number (15354111 = T5541).

The spelling of 48931399 in words is "forty-eight million, nine hundred thirty-one thousand, three hundred ninety-nine".

Divisors: 1 11 89 151 331 979 1661 3641 13439 29459 49981 147829 324049 549791 4448309 48931399