13147639 has 8 divisors (see below), whose sum is σ = 14135040. Its totient is φ = 12189816.

The previous prime is 13147609. The next prime is 13147661. The reversal of 13147639 is 93674131.

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

It is a cyclic number.

It is not a de Polignac number, because 13147639 - 2¹³ = 13139447 is a prime.

It is a super-2 number, since 2×13147639² = 345720822548642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13147609) 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, 6469 + ... + 8254.

It is an arithmetic number, because the mean of its divisors is an integer number (1766880).

Almost surely, 2^13147639 is an apocalyptic number.

13147639 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

13147639 is a deficient number, since it is larger than the sum of its proper divisors (987401).

13147639 is a wasteful number, since it uses less digits than its factorization.

13147639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14789.

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

The square root of 13147639 is about 3625.9673192129. The cubic root of 13147639 is about 236.0202450793.

The spelling of 13147639 in words is "thirteen million, one hundred forty-seven thousand, six hundred thirty-nine".