90939015 has 24 divisors (see below), whose sum is σ = 158584608. Its totient is φ = 48206400.

The previous prime is 90939011. The next prime is 90939019. The reversal of 90939015 is 51093909.

It is an interprime number because it is at equal distance from previous prime (90939011) and next prime (90939019).

It is not a de Polignac number, because 90939015 - 2² = 90939011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90939011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1465 + ... + 13565.

It is an arithmetic number, because the mean of its divisors is an integer number (6607692).

Almost surely, 2^90939015 is an apocalyptic number.

90939015 is a deficient number, since it is larger than the sum of its proper divisors (67645593).

90939015 is a wasteful number, since it uses less digits than its factorization.

90939015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12279 (or 12276 counting only the distinct ones).

The product of its (nonzero) digits is 10935, while the sum is 36.

The square root of 90939015 is about 9536.1949959090. The cubic root of 90939015 is about 449.6936433338.

The spelling of 90939015 in words is "ninety million, nine hundred thirty-nine thousand, fifteen".