990034859 has 18 divisors (see below), whose sum is σ = 1106984676. Its totient is φ = 878116720.

The previous prime is 990034853. The next prime is 990034861. The reversal of 990034859 is 958430099.

It is a de Polignac number, because none of the positive numbers 2^k-990034859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (990034853) 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 17 ways as a sum of consecutive naturals, for example, 5530832 + ... + 5531010.

Almost surely, 2^990034859 is an apocalyptic number.

990034859 is a deficient number, since it is larger than the sum of its proper divisors (116949817).

990034859 is an equidigital number, since it uses as much as digits as its factorization.

990034859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475 (or 243 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 47.

The square root of 990034859 is about 31464.8193861017. The cubic root of 990034859 is about 996.6671910577.

The spelling of 990034859 in words is "nine hundred ninety million, thirty-four thousand, eight hundred fifty-nine".