9137990 has 8 divisors (see below), whose sum is σ = 16448400. Its totient is φ = 3655192.

The previous prime is 9137981. The next prime is 9138007. The reversal of 9137990 is 997319.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×9137990² = 167005722480200, which contains 22 as substring.

It is a Curzon 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 3 ways as a sum of consecutive naturals, for example, 456890 + ... + 456909.

It is an arithmetic number, because the mean of its divisors is an integer number (2056050).

Almost surely, 2^9137990 is an apocalyptic number.

9137990 is a deficient number, since it is larger than the sum of its proper divisors (7310410).

9137990 is a wasteful number, since it uses less digits than its factorization.

9137990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913806.

The product of its (nonzero) digits is 15309, while the sum is 38.

The square root of 9137990 is about 3022.9108488343. The cubic root of 9137990 is about 209.0660719195.

The spelling of 9137990 in words is "nine million, one hundred thirty-seven thousand, nine hundred ninety".