13940623449 has 16 divisors (see below), whose sum is σ = 21550723200. Its totient is φ = 8889672528.

The previous prime is 13940623409. The next prime is 13940623453. The reversal of 13940623449 is 94432604931.

13940623449 is a `hidden beast` number, since 1 + 3 + 9 + 406 + 234 + 4 + 9 = 666.

It is not a de Polignac number, because 13940623449 - 2¹² = 13940619353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13940623409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11223714 + ... + 11224955.

It is an arithmetic number, because the mean of its divisors is an integer number (1346920200).

Almost surely, 2^13940623449 is an apocalyptic number.

It is an amenable number.

13940623449 is a deficient number, since it is larger than the sum of its proper divisors (7610099751).

13940623449 is a wasteful number, since it uses less digits than its factorization.

13940623449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22448701 (or 22448695 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 45.

The spelling of 13940623449 in words is "thirteen billion, nine hundred forty million, six hundred twenty-three thousand, four hundred forty-nine".