89945437 has 2 divisors, whose sum is σ = 89945438. Its totient is φ = 89945436.

The previous prime is 89945407. The next prime is 89945497. The reversal of 89945437 is 73454998.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83283876 + 6661561 = 9126^2 + 2581^2 .

It is a cyclic number.

It is not a de Polignac number, because 89945437 - 2⁷ = 89945309 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89945407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44972718 + 44972719.

It is an arithmetic number, because the mean of its divisors is an integer number (44972719).

Almost surely, 2^89945437 is an apocalyptic number.

It is an amenable number.

89945437 is a deficient number, since it is larger than the sum of its proper divisors (1).

89945437 is an equidigital number, since it uses as much as digits as its factorization.

89945437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 49.

The square root of 89945437 is about 9483.9568219177. The cubic root of 89945437 is about 448.0498937974.

The spelling of 89945437 in words is "eighty-nine million, nine hundred forty-five thousand, four hundred thirty-seven".