85979378 has 16 divisors (see below), whose sum is σ = 134288280. Its totient is φ = 41251200.

The previous prime is 85979339. The next prime is 85979393. The reversal of 85979378 is 87397958.

It can be written as a sum of positive squares in 4 ways, for example, as 49098049 + 36881329 = 7007^2 + 6073^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3593 + ... + 13596.

Almost surely, 2^85979378 is an apocalyptic number.

85979378 is a deficient number, since it is larger than the sum of its proper divisors (48308902).

85979378 is a wasteful number, since it uses less digits than its factorization.

85979378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17293.

The product of its digits is 3810240, while the sum is 56.

The square root of 85979378 is about 9272.5065651096. The cubic root of 85979378 is about 441.3652121795.

The spelling of 85979378 in words is "eighty-five million, nine hundred seventy-nine thousand, three hundred seventy-eight".