13877961 has 8 divisors (see below), whose sum is σ = 19477920. Its totient is φ = 8764992.

The previous prime is 13877939. The next prime is 13877971. The reversal of 13877961 is 16977831.

13877961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 13877961 - 2⁷ = 13877833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13877971) 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, 121680 + ... + 121793.

It is an arithmetic number, because the mean of its divisors is an integer number (2434740).

Almost surely, 2^13877961 is an apocalyptic number.

It is an amenable number.

13877961 is a deficient number, since it is larger than the sum of its proper divisors (5599959).

13877961 is a wasteful number, since it uses less digits than its factorization.

13877961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243495.

The product of its digits is 63504, while the sum is 42.

The square root of 13877961 is about 3725.3135438510. The cubic root of 13877961 is about 240.3118688709.

The spelling of 13877961 in words is "thirteen million, eight hundred seventy-seven thousand, nine hundred sixty-one".