79393938 has 32 divisors (see below), whose sum is σ = 176904000. Its totient is φ = 23585856.

The previous prime is 79393901. The next prime is 79393939. The reversal of 79393938 is 83939397.

It is a happy number.

It is a super-2 number, since 2×79393938² = 12606794782295688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (79393939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15288 + ... + 19811.

It is an arithmetic number, because the mean of its divisors is an integer number (5528250).

Almost surely, 2^79393938 is an apocalyptic number.

79393938 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

79393938 is an abundant number, since it is smaller than the sum of its proper divisors (97510062).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79393938 is a wasteful number, since it uses less digits than its factorization.

79393938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35146.

The product of its digits is 1102248, while the sum is 51.

The square root of 79393938 is about 8910.3276034049. The cubic root of 79393938 is about 429.7960778165.

It can be divided in two parts, 7 and 9393938, that added together give a triangular number (9393945 = T₄₃₃₄).

The spelling of 79393938 in words is "seventy-nine million, three hundred ninety-three thousand, nine hundred thirty-eight".