19929475 has 12 divisors (see below), whose sum is σ = 24911104. Its totient is φ = 15815520.

The previous prime is 19929463. The next prime is 19929509. The reversal of 19929475 is 57492991.

It is a happy number.

It is not a de Polignac number, because 19929475 - 2⁵ = 19929443 is a prime.

It is a Duffinian 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, 37 + ... + 6313.

Almost surely, 2^19929475 is an apocalyptic number.

19929475 is a deficient number, since it is larger than the sum of its proper divisors (4981629).

19929475 is a wasteful number, since it uses less digits than its factorization.

19929475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6414 (or 6409 counting only the distinct ones).

The product of its digits is 204120, while the sum is 46.

The square root of 19929475 is about 4464.2440569485. The cubic root of 19929475 is about 271.1223287273.

The spelling of 19929475 in words is "nineteen million, nine hundred twenty-nine thousand, four hundred seventy-five".