13992641 has 8 divisors (see below), whose sum is σ = 15219624. Its totient is φ = 12787200.

The previous prime is 13992637. The next prime is 13992731. The reversal of 13992641 is 14629931.

It can be written as a sum of positive squares in 4 ways, for example, as 633616 + 13359025 = 796^2 + 3655^2 .

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 13992641 - 2² = 13992637 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13992631) 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, 4016 + ... + 6641.

It is an arithmetic number, because the mean of its divisors is an integer number (1902453).

Almost surely, 2^13992641 is an apocalyptic number.

It is an amenable number.

13992641 is a deficient number, since it is larger than the sum of its proper divisors (1226983).

13992641 is a wasteful number, since it uses less digits than its factorization.

13992641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10771.

The product of its digits is 11664, while the sum is 35.

The square root of 13992641 is about 3740.6738697727. The cubic root of 13992641 is about 240.9719898807.

The spelling of 13992641 in words is "thirteen million, nine hundred ninety-two thousand, six hundred forty-one".