1379880973 has 4 divisors (see below), whose sum is σ = 1461050460. Its totient is φ = 1298711488.

The previous prime is 1379880937. The next prime is 1379880977. The reversal of 1379880973 is 3790889731.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1019716489 + 360164484 = 31933^2 + 18978^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1379880973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1379880977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40584718 + ... + 40584751.

It is an arithmetic number, because the mean of its divisors is an integer number (365262615).

Almost surely, 2^1379880973 is an apocalyptic number.

It is an amenable number.

1379880973 is a deficient number, since it is larger than the sum of its proper divisors (81169487).

1379880973 is an equidigital number, since it uses as much as digits as its factorization.

1379880973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81169486.

The product of its (nonzero) digits is 2286144, while the sum is 55.

The square root of 1379880973 is about 37146.7491579007. The cubic root of 1379880973 is about 1113.3042716447.

The spelling of 1379880973 in words is "one billion, three hundred seventy-nine million, eight hundred eighty thousand, nine hundred seventy-three".