239473902021 has 8 divisors (see below), whose sum is σ = 320060586720. Its totient is φ = 159268242672.

The previous prime is 239473901983. The next prime is 239473902037. The reversal of 239473902021 is 120209374932.

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

It is not a de Polignac number, because 239473902021 - 2²⁵ = 239440347589 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239473902221) 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, 95254870 + ... + 95257383.

It is an arithmetic number, because the mean of its divisors is an integer number (40007573340).

Almost surely, 2^239473902021 is an apocalyptic number.

It is an amenable number.

239473902021 is a deficient number, since it is larger than the sum of its proper divisors (80586684699).

239473902021 is a wasteful number, since it uses less digits than its factorization.

239473902021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190512675.

The product of its (nonzero) digits is 163296, while the sum is 42.

The spelling of 239473902021 in words is "two hundred thirty-nine billion, four hundred seventy-three million, nine hundred two thousand, twenty-one".