90408038 has 12 divisors (see below), whose sum is σ = 157752972. Its totient is φ = 38746260.

The previous prime is 90408013. The next prime is 90408041. The reversal of 90408038 is 83080409.

It is a super-2 number, since 2×90408038² = 16347226670018888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 90407995 and 90408013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 461168 + ... + 461363.

It is an arithmetic number, because the mean of its divisors is an integer number (13146081).

Almost surely, 2^90408038 is an apocalyptic number.

90408038 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

90408038 is a deficient number, since it is larger than the sum of its proper divisors (67344934).

90408038 is a wasteful number, since it uses less digits than its factorization.

90408038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 922547 (or 922540 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 90408038 is about 9508.3141513099. The cubic root of 90408038 is about 448.8167068481.

The spelling of 90408038 in words is "ninety million, four hundred eight thousand, thirty-eight".