90097793 has 12 divisors (see below), whose sum is σ = 93199764. Its totient is φ = 87074400.

The previous prime is 90097769. The next prime is 90097801. The reversal of 90097793 is 39779009.

It can be written as a sum of positive squares in 2 ways, for example, as 42667024 + 47430769 = 6532^2 + 6887^2 .

It is not a de Polignac number, because 90097793 - 2⁶ = 90097729 is a prime.

It is a super-2 number, since 2×90097793² = 16235224606941698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90097723) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 307355 + ... + 307647.

It is an arithmetic number, because the mean of its divisors is an integer number (7766647).

Almost surely, 2^90097793 is an apocalyptic number.

It is an amenable number.

90097793 is a deficient number, since it is larger than the sum of its proper divisors (3101971).

90097793 is an equidigital number, since it uses as much as digits as its factorization.

90097793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496 (or 425 counting only the distinct ones).

The product of its (nonzero) digits is 107163, while the sum is 44.

The square root of 90097793 is about 9491.9857248102. The cubic root of 90097793 is about 448.3027307215.

The spelling of 90097793 in words is "ninety million, ninety-seven thousand, seven hundred ninety-three".