79621923 has 8 divisors (see below), whose sum is σ = 106431568. Its totient is φ = 52946784.

The previous prime is 79621921. The next prime is 79621963. The reversal of 79621923 is 32912697.

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

It is not a de Polignac number, because 79621923 - 2¹ = 79621921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79621921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32236 + ... + 34617.

It is an arithmetic number, because the mean of its divisors is an integer number (13303946).

Almost surely, 2^79621923 is an apocalyptic number.

79621923 is a deficient number, since it is larger than the sum of its proper divisors (26809645).

79621923 is a wasteful number, since it uses less digits than its factorization.

79621923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67253.

The product of its digits is 40824, while the sum is 39.

The square root of 79621923 is about 8923.1117330223. Note that the first 3 decimals coincide. The cubic root of 79621923 is about 430.2070807153.

The spelling of 79621923 in words is "seventy-nine million, six hundred twenty-one thousand, nine hundred twenty-three".