13917146 has 4 divisors (see below), whose sum is σ = 20875722. Its totient is φ = 6958572.

The previous prime is 13917121. The next prime is 13917149. The reversal of 13917146 is 64171931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64171931 = 3253 ⋅19727.

It can be written as a sum of positive squares in only one way, i.e., 13213225 + 703921 = 3635^2 + 839^2 .

It is not an unprimeable number, because it can be changed into a prime (13917149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3479285 + ... + 3479288.

Almost surely, 2^13917146 is an apocalyptic number.

13917146 is a deficient number, since it is larger than the sum of its proper divisors (6958576).

13917146 is an equidigital number, since it uses as much as digits as its factorization.

13917146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6958575.

The product of its digits is 4536, while the sum is 32.

The square root of 13917146 is about 3730.5691254821. The cubic root of 13917146 is about 240.5378331826.

The spelling of 13917146 in words is "thirteen million, nine hundred seventeen thousand, one hundred forty-six".