89439937 has 2 divisors, whose sum is σ = 89439938. Its totient is φ = 89439936.

The previous prime is 89439913. The next prime is 89439943. The reversal of 89439937 is 73993498.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54405376 + 35034561 = 7376^2 + 5919^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89439937 is a prime.

It is not a weakly prime, because it can be changed into another prime (89430937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44719968 + 44719969.

It is an arithmetic number, because the mean of its divisors is an integer number (44719969).

Almost surely, 2^89439937 is an apocalyptic number.

It is an amenable number.

89439937 is a deficient number, since it is larger than the sum of its proper divisors (1).

89439937 is an equidigital number, since it uses as much as digits as its factorization.

89439937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1469664, while the sum is 52.

The square root of 89439937 is about 9457.2690032588. The cubic root of 89439937 is about 447.2089586186.

The spelling of 89439937 in words is "eighty-nine million, four hundred thirty-nine thousand, nine hundred thirty-seven".