19979674 has 16 divisors (see below), whose sum is σ = 35209440. Its totient is φ = 8382960.

The previous prime is 19979657. The next prime is 19979689. The reversal of 19979674 is 47697991.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 34644 + ... + 35215.

It is an arithmetic number, because the mean of its divisors is an integer number (2200590).

Almost surely, 2^19979674 is an apocalyptic number.

19979674 is a deficient number, since it is larger than the sum of its proper divisors (15229766).

19979674 is a wasteful number, since it uses less digits than its factorization.

19979674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69885.

The product of its digits is 857304, while the sum is 52.

The square root of 19979674 is about 4469.8628614310. The cubic root of 19979674 is about 271.3497750697.

The spelling of 19979674 in words is "nineteen million, nine hundred seventy-nine thousand, six hundred seventy-four".