1399822028 has 24 divisors (see below), whose sum is σ = 2679085584. Its totient is φ = 634688000.

The previous prime is 1399821991. The next prime is 1399822031. The reversal of 1399822028 is 8202289931.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a self number, because there is not a number n which added to its sum of digits gives 1399822028.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22025 + ... + 57312.

It is an arithmetic number, because the mean of its divisors is an integer number (111628566).

Almost surely, 2^1399822028 is an apocalyptic number.

It is an amenable number.

1399822028 is a deficient number, since it is larger than the sum of its proper divisors (1279263556).

1399822028 is a wasteful number, since it uses less digits than its factorization.

1399822028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79753 (or 79751 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 1399822028 is about 37414.1955412648. The cubic root of 1399822028 is about 1118.6415364277.

The spelling of 1399822028 in words is "one billion, three hundred ninety-nine million, eight hundred twenty-two thousand, twenty-eight".