1249904286 has 24 divisors (see below), whose sum is σ = 2709330624. Its totient is φ = 416449440.

The previous prime is 1249904281. The next prime is 1249904297. The reversal of 1249904286 is 6824099421.

It is a super-2 number, since 2×1249904286² = 3124521448322339592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1249904281) 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, 29715 + ... + 58161.

It is an arithmetic number, because the mean of its divisors is an integer number (112888776).

Almost surely, 2^1249904286 is an apocalyptic number.

1249904286 is an abundant number, since it is smaller than the sum of its proper divisors (1459426338).

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

1249904286 is a wasteful number, since it uses less digits than its factorization.

1249904286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30896 (or 30893 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 1249904286 is about 35353.9854330456. The cubic root of 1249904286 is about 1077.1898497059.

The spelling of 1249904286 in words is "one billion, two hundred forty-nine million, nine hundred four thousand, two hundred eighty-six".