790128009 has 24 divisors (see below), whose sum is σ = 1247092704. Its totient is φ = 478080000.

The previous prime is 790127999. The next prime is 790128011. The reversal of 790128009 is 900821097.

790128009 = 640³ + 641³ + 642³.

It is a happy number.

It is not a de Polignac number, because 790128009 - 2¹² = 790123913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (790128109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57234 + ... + 69684.

It is an arithmetic number, because the mean of its divisors is an integer number (51962196).

Almost surely, 2^790128009 is an apocalyptic number.

It is an amenable number.

790128009 is a deficient number, since it is larger than the sum of its proper divisors (456964695).

790128009 is a wasteful number, since it uses less digits than its factorization.

790128009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13109 (or 13106 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 790128009 is about 28109.2157307884. The cubic root of 790128009 is about 924.4834745642.

The spelling of 790128009 in words is "seven hundred ninety million, one hundred twenty-eight thousand, nine".