1399748 has 12 divisors (see below), whose sum is σ = 2799552. Its totient is φ = 599880.

The previous prime is 1399733. The next prime is 1399751. The reversal of 1399748 is 8479931.

It is a happy number.

1399748 is an admirable number.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24968 + ... + 25023.

It is an arithmetic number, because the mean of its divisors is an integer number (233296).

2^1399748 is an apocalyptic number.

It is an amenable number.

1399748 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.

1399748 is a wasteful number, since it uses less digits than its factorization.

1399748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50002 (or 50000 counting only the distinct ones).

The product of its digits is 54432, while the sum is 41.

The square root of 1399748 is about 1183.1094623914. The cubic root of 1399748 is about 111.8621816717.

The spelling of 1399748 in words is "one million, three hundred ninety-nine thousand, seven hundred forty-eight".