89145437 has 2 divisors, whose sum is σ = 89145438. Its totient is φ = 89145436.

The previous prime is 89145431. The next prime is 89145479. The reversal of 89145437 is 73454198.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82101721 + 7043716 = 9061^2 + 2654^2 .

It is a cyclic number.

It is not a de Polignac number, because 89145437 - 2⁴ = 89145421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 89145394 and 89145403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89145431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44572718 + 44572719.

It is an arithmetic number, because the mean of its divisors is an integer number (44572719).

Almost surely, 2^89145437 is an apocalyptic number.

It is an amenable number.

89145437 is a deficient number, since it is larger than the sum of its proper divisors (1).

89145437 is an equidigital number, since it uses as much as digits as its factorization.

89145437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 41.

The square root of 89145437 is about 9441.6861311950. The cubic root of 89145437 is about 446.7175753836.

The spelling of 89145437 in words is "eighty-nine million, one hundred forty-five thousand, four hundred thirty-seven".