9990929 has 8 divisors (see below), whose sum is σ = 10803240. Its totient is φ = 9184896.

The previous prime is 9990919. The next prime is 9990943. The reversal of 9990929 is 9290999.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5329 + 9985600 = 73^2 + 3160^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 9990929 - 2⁴ = 9990913 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (9990919) 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, 2069 + ... + 4925.

It is an arithmetic number, because the mean of its divisors is an integer number (1350405).

Almost surely, 2^9990929 is an apocalyptic number.

It is an amenable number.

9990929 is a deficient number, since it is larger than the sum of its proper divisors (812311).

9990929 is a wasteful number, since it uses less digits than its factorization.

9990929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3139.

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

The square root of 9990929 is about 3160.8430837357. The cubic root of 9990929 is about 215.3783063726.

The spelling of 9990929 in words is "nine million, nine hundred ninety thousand, nine hundred twenty-nine".