19669994 has 16 divisors (see below), whose sum is σ = 30147936. Its totient is φ = 9622800.

The previous prime is 19669987. The next prime is 19670011. The reversal of 19669994 is 49996691.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23849 + ... + 24659.

It is an arithmetic number, because the mean of its divisors is an integer number (1884246).

Almost surely, 2^19669994 is an apocalyptic number.

19669994 is a deficient number, since it is larger than the sum of its proper divisors (10477942).

19669994 is a wasteful number, since it uses less digits than its factorization.

19669994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1061.

The product of its digits is 944784, while the sum is 53.

The square root of 19669994 is about 4435.0866958832. The cubic root of 19669994 is about 269.9405173035.

The spelling of 19669994 in words is "nineteen million, six hundred sixty-nine thousand, nine hundred ninety-four".