9990252376 has 32 divisors (see below), whose sum is σ = 20177166240. Its totient is φ = 4609847808.

The previous prime is 9990252353. The next prime is 9990252431. The reversal of 9990252376 is 6732520999.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (52).

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, 642000 + ... + 657376.

It is an arithmetic number, because the mean of its divisors is an integer number (630536445).

Almost surely, 2^9990252376 is an apocalyptic number.

9990252376 is the 49976-th decagonal number.

It is an amenable number.

9990252376 is an abundant number, since it is smaller than the sum of its proper divisors (10186913864).

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

9990252376 is a wasteful number, since it uses less digits than its factorization.

9990252376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21643 (or 21639 counting only the distinct ones).

The product of its (nonzero) digits is 1837080, while the sum is 52.

The square root of 9990252376 is about 99951.2499971861. The cubic root of 9990252376 is about 2153.7344418143.

The spelling of 9990252376 in words is "nine billion, nine hundred ninety million, two hundred fifty-two thousand, three hundred seventy-six".