13999970491 has 8 divisors (see below), whose sum is σ = 15079738464. Its totient is φ = 12920609280.

The previous prime is 13999970483. The next prime is 13999970519. The reversal of 13999970491 is 19407999931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13999970491 - 2³ = 13999970483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13999970291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28231 + ... + 169696.

It is an arithmetic number, because the mean of its divisors is an integer number (1884967308).

Almost surely, 2^13999970491 is an apocalyptic number.

13999970491 is a deficient number, since it is larger than the sum of its proper divisors (1079767973).

13999970491 is a wasteful number, since it uses less digits than its factorization.

13999970491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203381.

The product of its (nonzero) digits is 4960116, while the sum is 61.

The spelling of 13999970491 in words is "thirteen billion, nine hundred ninety-nine million, nine hundred seventy thousand, four hundred ninety-one".