1379237949 has 20 divisors (see below), whose sum is σ = 2168784640. Its totient is φ = 871096680.

The previous prime is 1379237927. The next prime is 1379237953. The reversal of 1379237949 is 9497329731.

It is not a de Polignac number, because 1379237949 - 2⁹ = 1379237437 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1379237895 and 1379237904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1379233949) 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 19 ways as a sum of consecutive naturals, for example, 446557 + ... + 449634.

It is an arithmetic number, because the mean of its divisors is an integer number (108439232).

Almost surely, 2^1379237949 is an apocalyptic number.

1379237949 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1379237949 is a deficient number, since it is larger than the sum of its proper divisors (789546691).

1379237949 is an equidigital number, since it uses as much as digits as its factorization.

1379237949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896222 (or 896213 counting only the distinct ones).

The product of its digits is 2571912, while the sum is 54.

The square root of 1379237949 is about 37138.0929639636. The cubic root of 1379237949 is about 1113.1313116554.

The spelling of 1379237949 in words is "one billion, three hundred seventy-nine million, two hundred thirty-seven thousand, nine hundred forty-nine".