19969775 has 12 divisors (see below), whose sum is σ = 28300272. Its totient is φ = 13693440.

The previous prime is 19969769. The next prime is 19969793. The reversal of 19969775 is 57796991.

It is not a de Polignac number, because 19969775 - 2⁸ = 19969519 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56882 + ... + 57231.

It is an arithmetic number, because the mean of its divisors is an integer number (2358356).

Almost surely, 2^19969775 is an apocalyptic number.

19969775 is a deficient number, since it is larger than the sum of its proper divisors (8330497).

19969775 is a wasteful number, since it uses less digits than its factorization.

19969775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114130 (or 114125 counting only the distinct ones).

The product of its digits is 1071630, while the sum is 53.

The square root of 19969775 is about 4468.7554195771. The cubic root of 19969775 is about 271.3049539320.

The spelling of 19969775 in words is "nineteen million, nine hundred sixty-nine thousand, seven hundred seventy-five".