9001620397 has 24 divisors (see below), whose sum is σ = 11583665856. Its totient is φ = 6843144000.

The previous prime is 9001620391. The next prime is 9001620413. The reversal of 9001620397 is 7930261009.

It is not a de Polignac number, because 9001620397 - 2³ = 9001620389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9001620391) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 94879 + ... + 164332.

It is an arithmetic number, because the mean of its divisors is an integer number (482652744).

Almost surely, 2^9001620397 is an apocalyptic number.

It is an amenable number.

9001620397 is a deficient number, since it is larger than the sum of its proper divisors (2582045459).

9001620397 is a wasteful number, since it uses less digits than its factorization.

9001620397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259281 (or 259270 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 9001620397 is about 94876.8696627371. The cubic root of 9001620397 is about 2080.2086511750.

The spelling of 9001620397 in words is "nine billion, one million, six hundred twenty thousand, three hundred ninety-seven".