89378837 has 2 divisors, whose sum is σ = 89378838. Its totient is φ = 89378836.

The previous prime is 89378833. The next prime is 89378857. The reversal of 89378837 is 73887398.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72148036 + 17230801 = 8494^2 + 4151^2 .

It is a cyclic number.

It is not a de Polignac number, because 89378837 - 2² = 89378833 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89378833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44689418 + 44689419.

It is an arithmetic number, because the mean of its divisors is an integer number (44689419).

Almost surely, 2^89378837 is an apocalyptic number.

It is an amenable number.

89378837 is a deficient number, since it is larger than the sum of its proper divisors (1).

89378837 is an equidigital number, since it uses as much as digits as its factorization.

89378837 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2032128, while the sum is 53.

The square root of 89378837 is about 9454.0381319307. The cubic root of 89378837 is about 447.1070999754.

The spelling of 89378837 in words is "eighty-nine million, three hundred seventy-eight thousand, eight hundred thirty-seven".