990874233 has 12 divisors (see below), whose sum is σ = 1480617060. Its totient is φ = 637803936.

The previous prime is 990874219. The next prime is 990874253. The reversal of 990874233 is 332478099.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 274134249 + 716739984 = 16557^2 + 26772^2 .

It is not a de Polignac number, because 990874233 - 2⁸ = 990873977 is a prime.

It is a super-3 number, since 3×990874233³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (990874253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1897966 + ... + 1898487.

It is an arithmetic number, because the mean of its divisors is an integer number (123384755).

Almost surely, 2^990874233 is an apocalyptic number.

It is an amenable number.

990874233 is a deficient number, since it is larger than the sum of its proper divisors (489742827).

990874233 is a wasteful number, since it uses less digits than its factorization.

990874233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3796488 (or 3796485 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 990874233 is about 31478.1548538030. The cubic root of 990874233 is about 996.9487771749.

The spelling of 990874233 in words is "nine hundred ninety million, eight hundred seventy-four thousand, two hundred thirty-three".