9901893244 has 24 divisors (see below), whose sum is σ = 18326806400. Its totient is φ = 4668133680.

The previous prime is 9901893233. The next prime is 9901893293. The reversal of 9901893244 is 4423981099.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 292704 + ... + 324775.

Almost surely, 2^9901893244 is an apocalyptic number.

It is an amenable number.

9901893244 is a deficient number, since it is larger than the sum of its proper divisors (8424913156).

9901893244 is a wasteful number, since it uses less digits than its factorization.

9901893244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617713 (or 617711 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 49.

The square root of 9901893244 is about 99508.2571649207. The cubic root of 9901893244 is about 2147.3660366832.

The spelling of 9901893244 in words is "nine billion, nine hundred one million, eight hundred ninety-three thousand, two hundred forty-four".