13960929721 has 8 divisors (see below), whose sum is σ = 14440293504. Its totient is φ = 13488178080.

The previous prime is 13960929713. The next prime is 13960929733. The reversal of 13960929721 is 12792906931.

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 13960929721 - 2³ = 13960929713 is a prime.

It is a super-2 number, since 2×13960929721² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13960959721) 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, 1648741 + ... + 1657186.

It is an arithmetic number, because the mean of its divisors is an integer number (1805036688).

Almost surely, 2^13960929721 is an apocalyptic number.

It is an amenable number.

13960929721 is a deficient number, since it is larger than the sum of its proper divisors (479363783).

13960929721 is a wasteful number, since it uses less digits than its factorization.

13960929721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3306071.

The product of its (nonzero) digits is 367416, while the sum is 49.

The spelling of 13960929721 in words is "thirteen billion, nine hundred sixty million, nine hundred twenty-nine thousand, seven hundred twenty-one".