990037338 has 16 divisors (see below), whose sum is σ = 1990027200. Its totient is φ = 328353696.

The previous prime is 990037337. The next prime is 990037361. The reversal of 990037338 is 833730099.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 990037338.

It is not an unprimeable number, because it can be changed into a prime (990037333) 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, 413395 + ... + 415782.

It is an arithmetic number, because the mean of its divisors is an integer number (124376700).

Almost surely, 2^990037338 is an apocalyptic number.

990037338 is an abundant number, since it is smaller than the sum of its proper divisors (999989862).

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

990037338 is a wasteful number, since it uses less digits than its factorization.

990037338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829381.

The product of its (nonzero) digits is 122472, while the sum is 42.

The square root of 990037338 is about 31464.8587792795. The cubic root of 990037338 is about 996.6680229261.

The spelling of 990037338 in words is "nine hundred ninety million, thirty-seven thousand, three hundred thirty-eight".