1249407696 has 40 divisors (see below), whose sum is σ = 3338938080. Its totient is φ = 402107776.

The previous prime is 1249407689. The next prime is 1249407697. The reversal of 1249407696 is 6967049421.

It is a happy number.

It is a super-2 number, since 2×1249407696² = 3122039181648056832, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1249407697) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 447390 + ... + 450173.

It is an arithmetic number, because the mean of its divisors is an integer number (83473452).

Almost surely, 2^1249407696 is an apocalyptic number.

1249407696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1249407696 is an abundant number, since it is smaller than the sum of its proper divisors (2089530384).

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

1249407696 is a wasteful number, since it uses less digits than its factorization.

1249407696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897603 (or 897597 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 48.

The square root of 1249407696 is about 35346.9616233135. The cubic root of 1249407696 is about 1077.0471740970.

The spelling of 1249407696 in words is "one billion, two hundred forty-nine million, four hundred seven thousand, six hundred ninety-six".