1370399 has 4 divisors (see below), whose sum is σ = 1376664. Its totient is φ = 1364136.

The previous prime is 1370389. The next prime is 1370407. The reversal of 1370399 is 9930731.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1370399 - 2⁸ = 1370143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1370329) 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, 2792 + ... + 3245.

It is an arithmetic number, because the mean of its divisors is an integer number (344166).

2^1370399 is an apocalyptic number.

1370399 is a deficient number, since it is larger than the sum of its proper divisors (6265).

1370399 is an equidigital number, since it uses as much as digits as its factorization.

1370399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6264.

The product of its (nonzero) digits is 5103, while the sum is 32.

The square root of 1370399 is about 1170.6404230164. The cubic root of 1370399 is about 111.0748352319.

The spelling of 1370399 in words is "one million, three hundred seventy thousand, three hundred ninety-nine".