1399274844 has 24 divisors (see below), whose sum is σ = 3561790848. Its totient is φ = 424022640.

The previous prime is 1399274837. The next prime is 1399274867. The reversal of 1399274844 is 4484729931.

It is a congruent number.

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, 5300152 + ... + 5300415.

It is an arithmetic number, because the mean of its divisors is an integer number (148407952).

Almost surely, 2^1399274844 is an apocalyptic number.

It is an amenable number.

1399274844 is an abundant number, since it is smaller than the sum of its proper divisors (2162516004).

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

1399274844 is a wasteful number, since it uses less digits than its factorization.

1399274844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10600585 (or 10600583 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 51.

The square root of 1399274844 is about 37406.8823079390. The cubic root of 1399274844 is about 1118.4957601524.

The spelling of 1399274844 in words is "one billion, three hundred ninety-nine million, two hundred seventy-four thousand, eight hundred forty-four".