1249369436 has 12 divisors (see below), whose sum is σ = 2498738928. Its totient is φ = 535444032.

The previous prime is 1249369411. The next prime is 1249369441. The reversal of 1249369436 is 6349639421.

1249369436 is an admirable number.

It is a super-2 number, since 2×1249369436² = 3121847975221916192, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 22310141 + ... + 22310196.

It is an arithmetic number, because the mean of its divisors is an integer number (208228244).

Almost surely, 2^1249369436 is an apocalyptic number.

It is an amenable number.

1249369436 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1249369436 is a wasteful number, since it uses less digits than its factorization.

1249369436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44620348 (or 44620346 counting only the distinct ones).

The product of its digits is 839808, while the sum is 47.

The square root of 1249369436 is about 35346.4204128226. The cubic root of 1249369436 is about 1077.0361800221.

The spelling of 1249369436 in words is "one billion, two hundred forty-nine million, three hundred sixty-nine thousand, four hundred thirty-six".