13422947 has 4 divisors (see below), whose sum is σ = 13430856. Its totient is φ = 13415040.

The previous prime is 13422943. The next prime is 13423019. The reversal of 13422947 is 74922431.

13422947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 74922431 = 23 ⋅3257497.

It is a cyclic number.

It is not a de Polignac number, because 13422947 - 2² = 13422943 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13422943) 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, 254 + ... + 5187.

It is an arithmetic number, because the mean of its divisors is an integer number (3357714).

Almost surely, 2^13422947 is an apocalyptic number.

13422947 is a deficient number, since it is larger than the sum of its proper divisors (7909).

13422947 is an equidigital number, since it uses as much as digits as its factorization.

13422947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7908.

The product of its digits is 12096, while the sum is 32.

The square root of 13422947 is about 3663.7340241890. The cubic root of 13422947 is about 237.6562783076.

The spelling of 13422947 in words is "thirteen million, four hundred twenty-two thousand, nine hundred forty-seven".