13977649 has 8 divisors (see below), whose sum is σ = 16009920. Its totient is φ = 11954256.

The previous prime is 13977647. The next prime is 13977671. The reversal of 13977649 is 94677931.

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 13977649 - 2¹ = 13977647 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13977599 and 13977608.

It is not an unprimeable number, because it can be changed into a prime (13977643) 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, 1602 + ... + 5524.

It is an arithmetic number, because the mean of its divisors is an integer number (2001240).

Almost surely, 2^13977649 is an apocalyptic number.

It is an amenable number.

13977649 is a deficient number, since it is larger than the sum of its proper divisors (2032271).

13977649 is an equidigital number, since it uses as much as digits as its factorization.

13977649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4439.

The product of its digits is 285768, while the sum is 46.

The square root of 13977649 is about 3738.6694157146. The cubic root of 13977649 is about 240.8858983639.

The spelling of 13977649 in words is "thirteen million, nine hundred seventy-seven thousand, six hundred forty-nine".