1399797 has 24 divisors (see below), whose sum is σ = 2448576. Its totient is φ = 752256.

The previous prime is 1399793. The next prime is 1399813. The reversal of 1399797 is 7979931.

It is not a de Polignac number, because 1399797 - 2² = 1399793 is a prime.

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

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 23 ways as a sum of consecutive naturals, for example, 418 + ... + 1724.

It is an arithmetic number, because the mean of its divisors is an integer number (102024).

2^1399797 is an apocalyptic number.

1399797 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1399797 is a deficient number, since it is larger than the sum of its proper divisors (1048779).

1399797 is a wasteful number, since it uses less digits than its factorization.

1399797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337 (or 1334 counting only the distinct ones).

The product of its digits is 107163, while the sum is 45.

The square root of 1399797 is about 1183.1301703532. The cubic root of 1399797 is about 111.8634869502.

The spelling of 1399797 in words is "one million, three hundred ninety-nine thousand, seven hundred ninety-seven".