90893907 has 64 divisors (see below), whose sum is σ = 154291200. Its totient is φ = 53117856.

The previous prime is 90893903. The next prime is 90893927. The reversal of 90893907 is 70939809.

It is a happy number.

It is not a de Polignac number, because 90893907 - 2² = 90893903 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90893903) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 653844 + ... + 653982.

It is an arithmetic number, because the mean of its divisors is an integer number (2410800).

Almost surely, 2^90893907 is an apocalyptic number.

90893907 is a deficient number, since it is larger than the sum of its proper divisors (63397293).

90893907 is a wasteful number, since it uses less digits than its factorization.

90893907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196 (or 178 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 90893907 is about 9533.8296082949. The cubic root of 90893907 is about 449.6192779814.

It can be divided in two parts, 9089 and 3907, that added together give a square (12996 = 114²).

The spelling of 90893907 in words is "ninety million, eight hundred ninety-three thousand, nine hundred seven".