791621842 has 16 divisors (see below), whose sum is σ = 1296058464. Its totient is φ = 359640000.

The previous prime is 791621837. The next prime is 791621849. The reversal of 791621842 is 248126197.

It is a junction number, because it is equal to n+sod(n) for n = 791621795 and 791621804.

It is not an unprimeable number, because it can be changed into a prime (791621849) 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, 39217 + ... + 55867.

It is an arithmetic number, because the mean of its divisors is an integer number (81003654).

Almost surely, 2^791621842 is an apocalyptic number.

791621842 is a deficient number, since it is larger than the sum of its proper divisors (504436622).

791621842 is a wasteful number, since it uses less digits than its factorization.

791621842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18825.

The product of its digits is 48384, while the sum is 40.

The square root of 791621842 is about 28135.7751270513. The cubic root of 791621842 is about 925.0657238910.

The spelling of 791621842 in words is "seven hundred ninety-one million, six hundred twenty-one thousand, eight hundred forty-two".