1313739 has 30 divisors (see below), whose sum is σ = 2289804. Its totient is φ = 748440.

The previous prime is 1313731. The next prime is 1313747. The reversal of 1313739 is 9373131.

It is an interprime number because it is at equal distance from previous prime (1313731) and next prime (1313747).

It is not a de Polignac number, because 1313739 - 2³ = 1313731 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1313731) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 3804 + ... + 4134.

2^1313739 is an apocalyptic number.

1313739 is a deficient number, since it is larger than the sum of its proper divisors (976065).

1313739 is an equidigital number, since it uses as much as digits as its factorization.

1313739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357 (or 341 counting only the distinct ones).

The product of its digits is 1701, while the sum is 27.

The square root of 1313739 is about 1146.1845401156. The cubic root of 1313739 is about 109.5224198791.

The spelling of 1313739 in words is "one million, three hundred thirteen thousand, seven hundred thirty-nine".