13994213487 has 8 divisors (see below), whose sum is σ = 18661270320. Its totient is φ = 9328316160.

The previous prime is 13994213479. The next prime is 13994213489. The reversal of 13994213487 is 78431249931.

It is a happy number.

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

It is not a de Polignac number, because 13994213487 - 2³ = 13994213479 is a prime.

It is a super-2 number, since 2×13994213487² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13994213489) 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, 261312 + ... + 310277.

It is an arithmetic number, because the mean of its divisors is an integer number (2332658790).

Almost surely, 2^13994213487 is an apocalyptic number.

13994213487 is a deficient number, since it is larger than the sum of its proper divisors (4667056833).

13994213487 is an equidigital number, since it uses as much as digits as its factorization.

13994213487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579753.

The product of its digits is 1306368, while the sum is 51.

The spelling of 13994213487 in words is "thirteen billion, nine hundred ninety-four million, two hundred thirteen thousand, four hundred eighty-seven".