89315978 has 16 divisors (see below), whose sum is σ = 136080000. Its totient is φ = 43959552.

The previous prime is 89315959. The next prime is 89315987. The reversal of 89315978 is 87951398.

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 7 ways as a sum of consecutive naturals, for example, 70313 + ... + 71571.

It is an arithmetic number, because the mean of its divisors is an integer number (8505000).

Almost surely, 2^89315978 is an apocalyptic number.

89315978 is a deficient number, since it is larger than the sum of its proper divisors (46764022).

89315978 is a wasteful number, since it uses less digits than its factorization.

89315978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1789.

The product of its digits is 544320, while the sum is 50.

The square root of 89315978 is about 9450.7130947881. The cubic root of 89315978 is about 447.0022604807.

The spelling of 89315978 in words is "eighty-nine million, three hundred fifteen thousand, nine hundred seventy-eight".