13071739 has 8 divisors (see below), whose sum is σ = 13685760. Its totient is φ = 12469800.

The previous prime is 13071733. The next prime is 13071757. The reversal of 13071739 is 93717031.

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 13071739 - 2³ = 13071731 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13071739.

It is not an unprimeable number, because it can be changed into a prime (13071731) 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, 769 + ... + 5170.

It is an arithmetic number, because the mean of its divisors is an integer number (1710720).

Almost surely, 2^13071739 is an apocalyptic number.

13071739 is a deficient number, since it is larger than the sum of its proper divisors (614021).

13071739 is an equidigital number, since it uses as much as digits as its factorization.

13071739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6041.

The product of its (nonzero) digits is 3969, while the sum is 31.

The square root of 13071739 is about 3615.4859977602. The cubic root of 13071739 is about 235.5651945725.

The spelling of 13071739 in words is "thirteen million, seventy-one thousand, seven hundred thirty-nine".