1379973899 has 8 divisors (see below), whose sum is σ = 1393458000. Its totient is φ = 1366504992.

The previous prime is 1379973877. The next prime is 1379973901. The reversal of 1379973899 is 9983799731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1379973899 - 2⁸ = 1379973643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1379973839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 278657 + ... + 283565.

It is an arithmetic number, because the mean of its divisors is an integer number (174182250).

Almost surely, 2^1379973899 is an apocalyptic number.

1379973899 is a deficient number, since it is larger than the sum of its proper divisors (13484101).

1379973899 is a wasteful number, since it uses less digits than its factorization.

1379973899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7597.

The product of its digits is 23147208, while the sum is 65.

The square root of 1379973899 is about 37147.9999327016. Note that the first 4 decimals coincide. The cubic root of 1379973899 is about 1113.3292623486.

The spelling of 1379973899 in words is "one billion, three hundred seventy-nine million, nine hundred seventy-three thousand, eight hundred ninety-nine".