79500385 has 16 divisors (see below), whose sum is σ = 97417872. Its totient is φ = 62265600.

The previous prime is 79500331. The next prime is 79500401. The reversal of 79500385 is 58300597.

It can be written as a sum of positive squares in 8 ways, for example, as 17673616 + 61826769 = 4204^2 + 7863^2 .

It is not a de Polignac number, because 79500385 - 2¹⁹ = 78976097 is a prime.

It is a super-2 number, since 2×79500385² = 12640622430296450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84015 + ... + 84955.

It is an arithmetic number, because the mean of its divisors is an integer number (6088617).

Almost surely, 2^79500385 is an apocalyptic number.

It is an amenable number.

79500385 is a deficient number, since it is larger than the sum of its proper divisors (17917487).

79500385 is a wasteful number, since it uses less digits than its factorization.

79500385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1284.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 79500385 is about 8916.2988397653. The cubic root of 79500385 is about 429.9880743042.

The spelling of 79500385 in words is "seventy-nine million, five hundred thousand, three hundred eighty-five".