13764139 has 4 divisors (see below), whose sum is σ = 13930056. Its totient is φ = 13598224.

The previous prime is 13764137. The next prime is 13764167. The reversal of 13764139 is 93146731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93146731 = 2027 ⋅45953.

It is a cyclic number.

It is not a de Polignac number, because 13764139 - 2¹ = 13764137 is a prime.

It is a super-2 number, since 2×13764139² = 378903044822642, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13764137) 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, 82834 + ... + 82999.

It is an arithmetic number, because the mean of its divisors is an integer number (3482514).

Almost surely, 2^13764139 is an apocalyptic number.

13764139 is a deficient number, since it is larger than the sum of its proper divisors (165917).

13764139 is an equidigital number, since it uses as much as digits as its factorization.

13764139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165916.

The product of its digits is 13608, while the sum is 34.

The square root of 13764139 is about 3710.0052560610. The cubic root of 13764139 is about 239.6530809474.

The spelling of 13764139 in words is "thirteen million, seven hundred sixty-four thousand, one hundred thirty-nine".