7389575921 has 8 divisors (see below), whose sum is σ = 9094862784. Its totient is φ = 5846697360.

The previous prime is 7389575917. The next prime is 7389575923. The reversal of 7389575921 is 1295759837.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7389575921 - 2² = 7389575917 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7389575923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40601975 + ... + 40602156.

It is an arithmetic number, because the mean of its divisors is an integer number (1136857848).

Almost surely, 2^7389575921 is an apocalyptic number.

It is an amenable number.

7389575921 is a deficient number, since it is larger than the sum of its proper divisors (1705286863).

7389575921 is a wasteful number, since it uses less digits than its factorization.

7389575921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81204151.

The product of its digits is 4762800, while the sum is 56.

The square root of 7389575921 is about 85962.6425896738. The cubic root of 7389575921 is about 1947.7797145202.

The spelling of 7389575921 in words is "seven billion, three hundred eighty-nine million, five hundred seventy-five thousand, nine hundred twenty-one".