13990909212 has 72 divisors (see below), whose sum is σ = 41722017792. Its totient is φ = 3868452000.

The previous prime is 13990909199. The next prime is 13990909213. The reversal of 13990909212 is 21290909931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13990909213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 887664 + ... + 903287.

Almost surely, 2^13990909212 is an apocalyptic number.

13990909212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13990909212 is an abundant number, since it is smaller than the sum of its proper divisors (27731108580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13990909212 is a wasteful number, since it uses less digits than its factorization.

13990909212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1790999 (or 1790994 counting only the distinct ones).

The product of its (nonzero) digits is 78732, while the sum is 45.

The spelling of 13990909212 in words is "thirteen billion, nine hundred ninety million, nine hundred nine thousand, two hundred twelve".