90920097 has 16 divisors (see below), whose sum is σ = 142620480. Its totient is φ = 57047616.

The previous prime is 90920077. The next prime is 90920107. The reversal of 90920097 is 79002909.

It is not a de Polignac number, because 90920097 - 2²³ = 82531489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90920077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98583 + ... + 99500.

It is an arithmetic number, because the mean of its divisors is an integer number (8913780).

Almost surely, 2^90920097 is an apocalyptic number.

It is an amenable number.

90920097 is a deficient number, since it is larger than the sum of its proper divisors (51700383).

90920097 is a wasteful number, since it uses less digits than its factorization.

90920097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198109 (or 198103 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 36.

The square root of 90920097 is about 9535.2030392646. The cubic root of 90920097 is about 449.6624579864.

The spelling of 90920097 in words is "ninety million, nine hundred twenty thousand, ninety-seven".