89621975 has 18 divisors (see below), whose sum is σ = 112534464. Its totient is φ = 70801600.

The previous prime is 89621971. The next prime is 89622017. The reversal of 89621975 is 57912698.

It is not a de Polignac number, because 89621975 - 2² = 89621971 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89621971) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 469130 + ... + 469320.

Almost surely, 2^89621975 is an apocalyptic number.

89621975 is a deficient number, since it is larger than the sum of its proper divisors (22912489).

89621975 is a wasteful number, since it uses less digits than its factorization.

89621975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475 (or 333 counting only the distinct ones).

The product of its digits is 272160, while the sum is 47.

The square root of 89621975 is about 9466.8883483434. Note that the first 3 decimals coincide. The cubic root of 89621975 is about 447.5121559695.

The spelling of 89621975 in words is "eighty-nine million, six hundred twenty-one thousand, nine hundred seventy-five".