90318097 has 4 divisors (see below), whose sum is σ = 93231616. Its totient is φ = 87404580.

The previous prime is 90318089. The next prime is 90318101. The reversal of 90318097 is 79081309.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79081309 = 5483 ⋅14423.

It is a cyclic number.

It is not a de Polignac number, because 90318097 - 2³ = 90318089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90318037) 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, 1456713 + ... + 1456774.

It is an arithmetic number, because the mean of its divisors is an integer number (23307904).

Almost surely, 2^90318097 is an apocalyptic number.

It is an amenable number.

90318097 is a deficient number, since it is larger than the sum of its proper divisors (2913519).

90318097 is a wasteful number, since it uses less digits than its factorization.

90318097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2913518.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 90318097 is about 9503.5833768111. The cubic root of 90318097 is about 448.6678247432.

The spelling of 90318097 in words is "ninety million, three hundred eighteen thousand, ninety-seven".