13899933 has 6 divisors (see below), whose sum is σ = 20077694. Its totient is φ = 9266616.

The previous prime is 13899929. The next prime is 13899947. The reversal of 13899933 is 33999831.

It can be written as a sum of positive squares in only one way, i.e., 13860729 + 39204 = 3723^2 + 198^2 .

It is not a de Polignac number, because 13899933 - 2² = 13899929 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13899973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 772210 + ... + 772227.

Almost surely, 2^13899933 is an apocalyptic number.

It is an amenable number.

13899933 is a deficient number, since it is larger than the sum of its proper divisors (6177761).

13899933 is a wasteful number, since it uses less digits than its factorization.

13899933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1544443 (or 1544440 counting only the distinct ones).

The product of its digits is 157464, while the sum is 45.

The square root of 13899933 is about 3728.2613910508. The cubic root of 13899933 is about 240.4386249622.

The spelling of 13899933 in words is "thirteen million, eight hundred ninety-nine thousand, nine hundred thirty-three".