90100837 has 2 divisors, whose sum is σ = 90100838. Its totient is φ = 90100836.

The previous prime is 90100819. The next prime is 90100853. The reversal of 90100837 is 73800109.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83795716 + 6305121 = 9154^2 + 2511^2 .

It is an emirp because it is prime and its reverse (73800109) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90100837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90100237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45050418 + 45050419.

It is an arithmetic number, because the mean of its divisors is an integer number (45050419).

Almost surely, 2^90100837 is an apocalyptic number.

It is an amenable number.

90100837 is a deficient number, since it is larger than the sum of its proper divisors (1).

90100837 is an equidigital number, since it uses as much as digits as its factorization.

90100837 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 90100837 is about 9492.1460692511. The cubic root of 90100837 is about 448.3077793770.

The spelling of 90100837 in words is "ninety million, one hundred thousand, eight hundred thirty-seven".