879923621 has 8 divisors (see below), whose sum is σ = 931953600. Its totient is φ = 827923648.

The previous prime is 879923617. The next prime is 879923651. The reversal of 879923621 is 126329978.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 879923621 - 2² = 879923617 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (879923651) 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, 86990 + ... + 96576.

It is an arithmetic number, because the mean of its divisors is an integer number (116494200).

Almost surely, 2^879923621 is an apocalyptic number.

It is an amenable number.

879923621 is a deficient number, since it is larger than the sum of its proper divisors (52029979).

879923621 is a wasteful number, since it uses less digits than its factorization.

879923621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15003.

The product of its digits is 326592, while the sum is 47.

The square root of 879923621 is about 29663.5065526650. The cubic root of 879923621 is about 958.2562460758.

The spelling of 879923621 in words is "eight hundred seventy-nine million, nine hundred twenty-three thousand, six hundred twenty-one".