89749637 has 2 divisors, whose sum is σ = 89749638. Its totient is φ = 89749636.

The previous prime is 89749633. The next prime is 89749661. The reversal of 89749637 is 73694798.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77457601 + 12292036 = 8801^2 + 3506^2 .

It is a cyclic number.

It is not a de Polignac number, because 89749637 - 2² = 89749633 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 (89749633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44874818 + 44874819.

It is an arithmetic number, because the mean of its divisors is an integer number (44874819).

Almost surely, 2^89749637 is an apocalyptic number.

It is an amenable number.

89749637 is a deficient number, since it is larger than the sum of its proper divisors (1).

89749637 is an equidigital number, since it uses as much as digits as its factorization.

89749637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2286144, while the sum is 53.

The square root of 89749637 is about 9473.6285023216. The cubic root of 89749637 is about 447.7245413504.

The spelling of 89749637 in words is "eighty-nine million, seven hundred forty-nine thousand, six hundred thirty-seven".