78958894 has 12 divisors (see below), whose sum is σ = 137775384. Its totient is φ = 33839484.

The previous prime is 78958883. The next prime is 78958937. The reversal of 78958894 is 49885987.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 402754 + ... + 402949.

It is an arithmetic number, because the mean of its divisors is an integer number (11481282).

Almost surely, 2^78958894 is an apocalyptic number.

78958894 is a deficient number, since it is larger than the sum of its proper divisors (58816490).

78958894 is a wasteful number, since it uses less digits than its factorization.

78958894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805719 (or 805712 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 58.

The square root of 78958894 is about 8885.8817232732. The cubic root of 78958894 is about 429.0096081511.

The spelling of 78958894 in words is "seventy-eight million, nine hundred fifty-eight thousand, eight hundred ninety-four".