89645972 has 12 divisors (see below), whose sum is σ = 168948276. Its totient is φ = 41375040.

The previous prime is 89645911. The next prime is 89646023. The reversal of 89645972 is 27954698.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 24940036 + 64705936 = 4994^2 + 8044^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 89645972.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 861929 + ... + 862032.

It is an arithmetic number, because the mean of its divisors is an integer number (14079023).

Almost surely, 2^89645972 is an apocalyptic number.

It is an amenable number.

89645972 is a deficient number, since it is larger than the sum of its proper divisors (79302304).

89645972 is a wasteful number, since it uses less digits than its factorization.

89645972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1723978 (or 1723976 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 50.

The square root of 89645972 is about 9468.1556810183. The cubic root of 89645972 is about 447.5520940571.

The spelling of 89645972 in words is "eighty-nine million, six hundred forty-five thousand, nine hundred seventy-two".