1399972 has 12 divisors (see below), whose sum is σ = 2800000. Its totient is φ = 599976.

The previous prime is 1399963. The next prime is 1399999. The reversal of 1399972 is 2799931.

1399972 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24972 + ... + 25027.

2^1399972 is an apocalyptic number.

It is an amenable number.

1399972 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1399972 is a wasteful number, since it uses less digits than its factorization.

1399972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50010 (or 50008 counting only the distinct ones).

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

The square root of 1399972 is about 1183.2041244012. The cubic root of 1399972 is about 111.8681484105.

The spelling of 1399972 in words is "one million, three hundred ninety-nine thousand, nine hundred seventy-two".