1399792 has 20 divisors (see below), whose sum is σ = 2745360. Its totient is φ = 691328.

The previous prime is 1399789. The next prime is 1399793. The reversal of 1399792 is 2979931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1399793) 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, 933 + ... + 1915.

It is an arithmetic number, because the mean of its divisors is an integer number (137268).

2^1399792 is an apocalyptic number.

It is an amenable number.

1399792 is a deficient number, since it is larger than the sum of its proper divisors (1345568).

1399792 is an equidigital number, since it uses as much as digits as its factorization.

1399792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1080 (or 1074 counting only the distinct ones).

The product of its digits is 30618, while the sum is 40.

The square root of 1399792 is about 1183.1280573125. The cubic root of 1399792 is about 111.8633537599.

The spelling of 1399792 in words is "one million, three hundred ninety-nine thousand, seven hundred ninety-two".