89963978 has 16 divisors (see below), whose sum is σ = 145500936. Its totient is φ = 41472000.

The previous prime is 89963957. The next prime is 89963981. The reversal of 89963978 is 87936998.

It can be written as a sum of positive squares in 4 ways, for example, as 75394489 + 14569489 = 8683^2 + 3817^2 .

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, 28478 + ... + 31478.

Almost surely, 2^89963978 is an apocalyptic number.

89963978 is a deficient number, since it is larger than the sum of its proper divisors (55536958).

89963978 is a wasteful number, since it uses less digits than its factorization.

89963978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4169.

The product of its digits is 5878656, while the sum is 59.

The square root of 89963978 is about 9484.9342644006. The cubic root of 89963978 is about 448.0806780988.

The spelling of 89963978 in words is "eighty-nine million, nine hundred sixty-three thousand, nine hundred seventy-eight".