1399613 has 8 divisors (see below), whose sum is σ = 1448832. Its totient is φ = 1351296.

The previous prime is 1399609. The next prime is 1399621. The reversal of 1399613 is 3169931.

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 1399613 - 2² = 1399609 is a prime.

It is an Ulam number.

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 1399613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1399603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4406 + ... + 4712.

It is an arithmetic number, because the mean of its divisors is an integer number (181104).

2^1399613 is an apocalyptic number.

It is an amenable number.

1399613 is a deficient number, since it is larger than the sum of its proper divisors (49219).

1399613 is an equidigital number, since it uses as much as digits as its factorization.

1399613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451.

The product of its digits is 4374, while the sum is 32.

The square root of 1399613 is about 1183.0524079685. The cubic root of 1399613 is about 111.8585853387.

The spelling of 1399613 in words is "one million, three hundred ninety-nine thousand, six hundred thirteen".