990122323 has 4 divisors (see below), whose sum is σ = 991076320. Its totient is φ = 989168328.

The previous prime is 990122317. The next prime is 990122387. The reversal of 990122323 is 323221099.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-990122323 is a prime.

It is a super-4 number, since 4×990122323⁴ (a number of 37 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (990122723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 475440 + ... + 477517.

It is an arithmetic number, because the mean of its divisors is an integer number (247769080).

Almost surely, 2^990122323 is an apocalyptic number.

990122323 is a deficient number, since it is larger than the sum of its proper divisors (953997).

990122323 is a wasteful number, since it uses less digits than its factorization.

990122323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953996.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 990122323 is about 31466.2092251355. The cubic root of 990122323 is about 996.6965401699.

The spelling of 990122323 in words is "nine hundred ninety million, one hundred twenty-two thousand, three hundred twenty-three".