1249703379 has 48 divisors (see below), whose sum is σ = 1893996000. Its totient is φ = 793317888.

The previous prime is 1249703369. The next prime is 1249703381. The reversal of 1249703379 is 9733079421.

1249703379 is a `hidden beast` number, since 1 + 249 + 70 + 337 + 9 = 666.

It is not a de Polignac number, because 1249703379 - 2⁸ = 1249703123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1249703309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4415772 + ... + 4416054.

It is an arithmetic number, because the mean of its divisors is an integer number (39458250).

Almost surely, 2^1249703379 is an apocalyptic number.

1249703379 is a deficient number, since it is larger than the sum of its proper divisors (644292621).

1249703379 is a wasteful number, since it uses less digits than its factorization.

1249703379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564 (or 561 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 45.

The square root of 1249703379 is about 35351.1439560306. The cubic root of 1249703379 is about 1077.1321315323.

The spelling of 1249703379 in words is "one billion, two hundred forty-nine million, seven hundred three thousand, three hundred seventy-nine".