9641225990 has 128 divisors (see below), whose sum is σ = 20060835840. Its totient is φ = 3304051200.

The previous prime is 9641225987. The next prime is 9641226013. The reversal of 9641225990 is 995221469.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 34805732 + ... + 34806008.

It is an arithmetic number, because the mean of its divisors is an integer number (156725280).

Almost surely, 2^9641225990 is an apocalyptic number.

9641225990 is an abundant number, since it is smaller than the sum of its proper divisors (10419609850).

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

9641225990 is a wasteful number, since it uses less digits than its factorization.

9641225990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558.

The product of its (nonzero) digits is 349920, while the sum is 47.

The square root of 9641225990 is about 98189.7448311177. The cubic root of 9641225990 is about 2128.3550959884.

The spelling of 9641225990 in words is "nine billion, six hundred forty-one million, two hundred twenty-five thousand, nine hundred ninety".