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1379030879 = 9497145207
BaseRepresentation
bin101001000110010…
…0101011101011111
310120002220000201202
41102030211131133
510311012442004
6344501230115
746113366122
oct12214453537
93502800652
101379030879
11648477346
12325a0233b
1318c919205
14d12143b9
1581101b1e
hex5232575f

1379030879 has 4 divisors (see below), whose sum is σ = 1379185584. Its totient is φ = 1378876176.

The previous prime is 1379030833. The next prime is 1379030893. The reversal of 1379030879 is 9780309731.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1379030879 - 220 = 1377982303 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 (1379030819) 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 3 ways as a sum of consecutive naturals, for example, 63107 + ... + 82100.

It is an arithmetic number, because the mean of its divisors is an integer number (344796396).

Almost surely, 21379030879 is an apocalyptic number.

1379030879 is a deficient number, since it is larger than the sum of its proper divisors (154705).

1379030879 is an equidigital number, since it uses as much as digits as its factorization.

1379030879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154704.

The product of its (nonzero) digits is 285768, while the sum is 47.

The square root of 1379030879 is about 37135.3050209635. The cubic root of 1379030879 is about 1113.0756027192.

The spelling of 1379030879 in words is "one billion, three hundred seventy-nine million, thirty thousand, eight hundred seventy-nine".

Divisors: 1 9497 145207 1379030879