79256789 has 4 divisors (see below), whose sum is σ = 79477920. Its totient is φ = 79035660.

The previous prime is 79256761. The next prime is 79256819. The reversal of 79256789 is 98765297.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 79256789 - 2²⁰ = 78208213 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79256789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79253789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110027 + ... + 110744.

It is an arithmetic number, because the mean of its divisors is an integer number (19869480).

Almost surely, 2^79256789 is an apocalyptic number.

It is an amenable number.

79256789 is a deficient number, since it is larger than the sum of its proper divisors (221131).

79256789 is a wasteful number, since it uses less digits than its factorization.

79256789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221130.

The product of its digits is 1905120, while the sum is 53.

The square root of 79256789 is about 8902.6282074453. The cubic root of 79256789 is about 429.5484515345.

The spelling of 79256789 in words is "seventy-nine million, two hundred fifty-six thousand, seven hundred eighty-nine".