19796879 has 24 divisors (see below), whose sum is σ = 22677120. Its totient is φ = 17236800.

The previous prime is 19796873. The next prime is 19796923. The reversal of 19796879 is 97869791.

It is not a de Polignac number, because 19796879 - 2¹² = 19792783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19796873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 324509 + ... + 324569.

It is an arithmetic number, because the mean of its divisors is an integer number (944880).

Almost surely, 2^19796879 is an apocalyptic number.

19796879 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

19796879 is a deficient number, since it is larger than the sum of its proper divisors (2880241).

19796879 is a wasteful number, since it uses less digits than its factorization.

19796879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159 (or 140 counting only the distinct ones).

The product of its digits is 1714608, while the sum is 56.

The square root of 19796879 is about 4449.3683821414. The cubic root of 19796879 is about 270.5197077355.

The spelling of 19796879 in words is "nineteen million, seven hundred ninety-six thousand, eight hundred seventy-nine".