90245397 has 16 divisors (see below), whose sum is σ = 133493760. Its totient is φ = 53766000.

The previous prime is 90245369. The next prime is 90245411. The reversal of 90245397 is 79354209.

It is not a de Polignac number, because 90245397 - 2¹⁹ = 89721109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90245317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21229 + ... + 25122.

It is an arithmetic number, because the mean of its divisors is an integer number (8343360).

Almost surely, 2^90245397 is an apocalyptic number.

It is an amenable number.

90245397 is a deficient number, since it is larger than the sum of its proper divisors (43248363).

90245397 is a wasteful number, since it uses less digits than its factorization.

90245397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46424.

The product of its (nonzero) digits is 68040, while the sum is 39.

The square root of 90245397 is about 9499.7577337530. The cubic root of 90245397 is about 448.5474099438.

The spelling of 90245397 in words is "ninety million, two hundred forty-five thousand, three hundred ninety-seven".