9949451256 has 48 divisors (see below), whose sum is σ = 27674719800. Its totient is φ = 3226848192.

The previous prime is 9949451249. The next prime is 9949451261. The reversal of 9949451256 is 6521549499.

9949451256 is a `hidden beast` number, since 99 + 494 + 5 + 12 + 56 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1864726 + ... + 1870053.

Almost surely, 2^9949451256 is an apocalyptic number.

It is an amenable number.

9949451256 is an abundant number, since it is smaller than the sum of its proper divisors (17725268544).

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

9949451256 is a wasteful number, since it uses less digits than its factorization.

9949451256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3734828 (or 3734821 counting only the distinct ones).

The product of its digits is 3499200, while the sum is 54.

The square root of 9949451256 is about 99746.9360732449. The cubic root of 9949451256 is about 2150.7984239221.

The spelling of 9949451256 in words is "nine billion, nine hundred forty-nine million, four hundred fifty-one thousand, two hundred fifty-six".