13877947 has 4 divisors (see below), whose sum is σ = 14481360. Its totient is φ = 13274536.

The previous prime is 13877939. The next prime is 13877971. The reversal of 13877947 is 74977831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74977831 = 47 ⋅1595273.

It is a cyclic number.

It is not a de Polignac number, because 13877947 - 2³ = 13877939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13877897 and 13877906.

It is not an unprimeable number, because it can be changed into a prime (13877917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 301672 + ... + 301717.

It is an arithmetic number, because the mean of its divisors is an integer number (3620340).

Almost surely, 2^13877947 is an apocalyptic number.

13877947 is a deficient number, since it is larger than the sum of its proper divisors (603413).

13877947 is an equidigital number, since it uses as much as digits as its factorization.

13877947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 603412.

The product of its digits is 296352, while the sum is 46.

The square root of 13877947 is about 3725.3116648141. The cubic root of 13877947 is about 240.3117880625.

The spelling of 13877947 in words is "thirteen million, eight hundred seventy-seven thousand, nine hundred forty-seven".