990358236 has 108 divisors (see below), whose sum is σ = 2963727312. Its totient is φ = 273143808.

The previous prime is 990358183. The next prime is 990358253. The reversal of 990358236 is 632853099.

It is a super-2 number, since 2×990358236² = 1961618871226063392, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 990358191 and 990358200.

It is a congruent number.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 209596 + ... + 214268.

Almost surely, 2^990358236 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 990358236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1481863656).

990358236 is an abundant number, since it is smaller than the sum of its proper divisors (1973369076).

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

990358236 is a wasteful number, since it uses less digits than its factorization.

990358236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4748 (or 4714 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The square root of 990358236 is about 31469.9576739468. The cubic root of 990358236 is about 996.7756936889.

The spelling of 990358236 in words is "nine hundred ninety million, three hundred fifty-eight thousand, two hundred thirty-six".