9901487740 has 12 divisors (see below), whose sum is σ = 20793124296. Its totient is φ = 3960595088.

The previous prime is 9901487677. The next prime is 9901487753. The reversal of 9901487740 is 477841099.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247537174 + ... + 247537213.

It is an arithmetic number, because the mean of its divisors is an integer number (1732760358).

Almost surely, 2^9901487740 is an apocalyptic number.

It is an amenable number.

9901487740 is an abundant number, since it is smaller than the sum of its proper divisors (10891636556).

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

9901487740 is a wasteful number, since it uses less digits than its factorization.

9901487740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495074396 (or 495074394 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 49.

The square root of 9901487740 is about 99506.2196046056. The cubic root of 9901487740 is about 2147.3367231845.

The spelling of 9901487740 in words is "nine billion, nine hundred one million, four hundred eighty-seven thousand, seven hundred forty".