89731970 has 48 divisors (see below), whose sum is σ = 173368512. Its totient is φ = 33374880.

The previous prime is 89731963. The next prime is 89731973. The reversal of 89731970 is 7913798.

It is not an unprimeable number, because it can be changed into a prime (89731973) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 425165 + ... + 425375.

It is an arithmetic number, because the mean of its divisors is an integer number (3611844).

Almost surely, 2^89731970 is an apocalyptic number.

89731970 is a deficient number, since it is larger than the sum of its proper divisors (83636542).

89731970 is a wasteful number, since it uses less digits than its factorization.

89731970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327 (or 284 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 44.

The square root of 89731970 is about 9472.6960259474. The cubic root of 89731970 is about 447.6951615898.

The spelling of 89731970 in words is "eighty-nine million, seven hundred thirty-one thousand, nine hundred seventy".