90408037 has 4 divisors (see below), whose sum is σ = 90428140. Its totient is φ = 90387936.

The previous prime is 90408013. The next prime is 90408041. The reversal of 90408037 is 73080409.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3806401 + 86601636 = 1951^2 + 9306^2 .

It is a cyclic number.

It is not a de Polignac number, because 90408037 - 2¹⁵ = 90375269 is a prime.

It is a super-2 number, since 2×90408037² = 16347226308386738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90408077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139 + ... + 13447.

It is an arithmetic number, because the mean of its divisors is an integer number (22607035).

Almost surely, 2^90408037 is an apocalyptic number.

It is an amenable number.

90408037 is a deficient number, since it is larger than the sum of its proper divisors (20103).

90408037 is a wasteful number, since it uses less digits than its factorization.

90408037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20102.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 90408037 is about 9508.3140987243. The cubic root of 90408037 is about 448.8167051933.

The spelling of 90408037 in words is "ninety million, four hundred eight thousand, thirty-seven".