1379820959 has 6 divisors (see below), whose sum is σ = 1516662840. Its totient is φ = 1254382580.

The previous prime is 1379820941. The next prime is 1379820973. The reversal of 1379820959 is 9590289731.

It is not a de Polignac number, because 1379820959 - 2¹² = 1379816863 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1379820959.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1379820919) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5701619 + ... + 5701860.

It is an arithmetic number, because the mean of its divisors is an integer number (252777140).

Almost surely, 2^1379820959 is an apocalyptic number.

1379820959 is a deficient number, since it is larger than the sum of its proper divisors (136841881).

1379820959 is a wasteful number, since it uses less digits than its factorization.

1379820959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11403501 (or 11403490 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 53.

The square root of 1379820959 is about 37145.9413529931. The cubic root of 1379820959 is about 1113.2881314093.

The spelling of 1379820959 in words is "one billion, three hundred seventy-nine million, eight hundred twenty thousand, nine hundred fifty-nine".