9992990 has 16 divisors (see below), whose sum is σ = 20557152. Its totient is φ = 3426144.

The previous prime is 9992963. The next prime is 9993019. The reversal of 9992990 is 992999.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71309 + ... + 71448.

It is an arithmetic number, because the mean of its divisors is an integer number (1284822).

Almost surely, 2^9992990 is an apocalyptic number.

9992990 is an abundant number, since it is smaller than the sum of its proper divisors (10564162).

9992990 is a wasteful number, since it uses less digits than its factorization.

9992990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142771.

The product of its (nonzero) digits is 118098, while the sum is 47.

The square root of 9992990 is about 3161.1690875371. The cubic root of 9992990 is about 215.3931152781.

The spelling of 9992990 in words is "nine million, nine hundred ninety-two thousand, nine hundred ninety".