89929657 has 2 divisors, whose sum is σ = 89929658. Its totient is φ = 89929656.

The previous prime is 89929639. The next prime is 89929661. The reversal of 89929657 is 75692998.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89472681 + 456976 = 9459^2 + 676^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89929657 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 89929598 and 89929607.

It is not a weakly prime, because it can be changed into another prime (89929627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44964828 + 44964829.

It is an arithmetic number, because the mean of its divisors is an integer number (44964829).

Almost surely, 2^89929657 is an apocalyptic number.

It is an amenable number.

89929657 is a deficient number, since it is larger than the sum of its proper divisors (1).

89929657 is an equidigital number, since it uses as much as digits as its factorization.

89929657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2449440, while the sum is 55.

The square root of 89929657 is about 9483.1248541818. The cubic root of 89929657 is about 448.0236903528.

The spelling of 89929657 in words is "eighty-nine million, nine hundred twenty-nine thousand, six hundred fifty-seven".