78935994 has 24 divisors (see below), whose sum is σ = 180030240. Its totient is φ = 24927048.

The previous prime is 78935993. The next prime is 78936001. The reversal of 78935994 is 49953987.

It is a super-2 number, since 2×78935994² = 12461782297536072, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78935994.

It is not an unprimeable number, because it can be changed into a prime (78935993) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 115062 + ... + 115745.

It is an arithmetic number, because the mean of its divisors is an integer number (7501260).

Almost surely, 2^78935994 is an apocalyptic number.

78935994 is an abundant number, since it is smaller than the sum of its proper divisors (101094246).

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

78935994 is a wasteful number, since it uses less digits than its factorization.

78935994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230834 (or 230831 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 54.

The square root of 78935994 is about 8884.5930689030. The cubic root of 78935994 is about 428.9681297334.

The spelling of 78935994 in words is "seventy-eight million, nine hundred thirty-five thousand, nine hundred ninety-four".