78939088 has 20 divisors (see below), whose sum is σ = 154301508. Its totient is φ = 39119360.

The previous prime is 78939067. The next prime is 78939103. The reversal of 78939088 is 88093987.

It can be written as a sum of positive squares in 2 ways, for example, as 31494544 + 47444544 = 5612^2 + 6888^2 .

It is a super-2 number, since 2×78939088² = 12462759228543488, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20023 + ... + 23638.

Almost surely, 2^78939088 is an apocalyptic number.

It is an amenable number.

78939088 is a deficient number, since it is larger than the sum of its proper divisors (75362420).

78939088 is a wasteful number, since it uses less digits than its factorization.

78939088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43782 (or 43776 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 52.

The square root of 78939088 is about 8884.7671888463. The cubic root of 78939088 is about 428.9737343167.

The spelling of 78939088 in words is "seventy-eight million, nine hundred thirty-nine thousand, eighty-eight".