9890831172 has 24 divisors (see below), whose sum is σ = 23163774592. Its totient is φ = 3284776800.

The previous prime is 9890831123. The next prime is 9890831173. The reversal of 9890831172 is 2711380989.

It is not an unprimeable number, because it can be changed into a prime (9890831173) 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, 1517479 + ... + 1523982.

Almost surely, 2^9890831172 is an apocalyptic number.

It is an amenable number.

9890831172 is an abundant number, since it is smaller than the sum of its proper divisors (13272943420).

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

9890831172 is a wasteful number, since it uses less digits than its factorization.

9890831172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3041739 (or 3041737 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 48.

The square root of 9890831172 is about 99452.6579433652. The cubic root of 9890831172 is about 2146.5660829617.

The spelling of 9890831172 in words is "nine billion, eight hundred ninety million, eight hundred thirty-one thousand, one hundred seventy-two".