90306085397 has 32 divisors (see below), whose sum is σ = 108552683520. Its totient is φ = 74158096320.

The previous prime is 90306085393. The next prime is 90306085417. The reversal of 90306085397 is 79358060309.

It is not a de Polignac number, because 90306085397 - 2² = 90306085393 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90306085393) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1494188 + ... + 1553450.

It is an arithmetic number, because the mean of its divisors is an integer number (3392271360).

Almost surely, 2^90306085397 is an apocalyptic number.

It is an amenable number.

90306085397 is a deficient number, since it is larger than the sum of its proper divisors (18246598123).

90306085397 is a wasteful number, since it uses less digits than its factorization.

90306085397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59633.

The product of its (nonzero) digits is 1224720, while the sum is 50.

The spelling of 90306085397 in words is "ninety billion, three hundred six million, eighty-five thousand, three hundred ninety-seven".