Search a number
-
+
489477031 = 19173148913
BaseRepresentation
bin11101001011001…
…101001110100111
31021010001000020221
4131023031032213
52000301231111
6120323105211
715062325511
oct3513151647
91233030227
10489477031
1123132a37a
12117b12207
137a53c4a4
1449016bb1
152ce8a371
hex1d2cd3a7

489477031 has 8 divisors (see below), whose sum is σ = 518220720. Its totient is φ = 461031552.

The previous prime is 489477029. The next prime is 489477047. The reversal of 489477031 is 130774984.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 489477031 - 21 = 489477029 is a prime.

It is a super-2 number, since 2×4894770312 = 479175527753149922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489477061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71170 + ... + 77743.

It is an arithmetic number, because the mean of its divisors is an integer number (64777590).

Almost surely, 2489477031 is an apocalyptic number.

489477031 is a deficient number, since it is larger than the sum of its proper divisors (28743689).

489477031 is a wasteful number, since it uses less digits than its factorization.

489477031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149105.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 489477031 is about 22124.1278020174. The cubic root of 489477031 is about 788.0929437425.

The spelling of 489477031 in words is "four hundred eighty-nine million, four hundred seventy-seven thousand, thirty-one".

Divisors: 1 19 173 3287 148913 2829347 25761949 489477031