9427990 has 64 divisors (see below), whose sum is σ = 21047040. Its totient is φ = 2989440.

The previous prime is 9427973. The next prime is 9427993. The reversal of 9427990 is 997249.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9427993) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 26997 + ... + 27343.

It is an arithmetic number, because the mean of its divisors is an integer number (328860).

Almost surely, 2^9427990 is an apocalyptic number.

9427990 is an abundant number, since it is smaller than the sum of its proper divisors (11619050).

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

9427990 is a wasteful number, since it uses less digits than its factorization.

9427990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 9427990 is about 3070.5032160869. The cubic root of 9427990 is about 211.2546956929.

The spelling of 9427990 in words is "nine million, four hundred twenty-seven thousand, nine hundred ninety".