19899962 has 12 divisors (see below), whose sum is σ = 31710030. Its totient is φ = 9364416.

The previous prime is 19899959. The next prime is 19899977. The reversal of 19899962 is 26999891.

It can be written as a sum of positive squares in 3 ways, for example, as 18309841 + 1590121 = 4279^2 + 1261^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16637 + ... + 17792.

Almost surely, 2^19899962 is an apocalyptic number.

19899962 is a deficient number, since it is larger than the sum of its proper divisors (11810068).

19899962 is a wasteful number, since it uses less digits than its factorization.

19899962 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34465 (or 34448 counting only the distinct ones).

The product of its digits is 629856, while the sum is 53.

The square root of 19899962 is about 4460.9373454466. The cubic root of 19899962 is about 270.9884301284.

The spelling of 19899962 in words is "nineteen million, eight hundred ninety-nine thousand, nine hundred sixty-two".