1379929491 has 12 divisors (see below), whose sum is σ = 2110480632. Its totient is φ = 865838016.

The previous prime is 1379929471. The next prime is 1379929493. The reversal of 1379929491 is 1949299731.

It is a happy number.

It is not a de Polignac number, because 1379929491 - 2¹⁵ = 1379896723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1379929493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4509421 + ... + 4509726.

It is an arithmetic number, because the mean of its divisors is an integer number (175873386).

Almost surely, 2^1379929491 is an apocalyptic number.

1379929491 is a deficient number, since it is larger than the sum of its proper divisors (730551141).

1379929491 is a wasteful number, since it uses less digits than its factorization.

1379929491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9019170 (or 9019167 counting only the distinct ones).

The product of its digits is 1102248, while the sum is 54.

The square root of 1379929491 is about 37147.4022106526. The cubic root of 1379929491 is about 1113.3173197903.

The spelling of 1379929491 in words is "one billion, three hundred seventy-nine million, nine hundred twenty-nine thousand, four hundred ninety-one".