16490999 has 6 divisors (see below), whose sum is σ = 19183464. Its totient is φ = 14135100.

The previous prime is 16490989. The next prime is 16491001. The reversal of 16490999 is 99909461.

It is not a de Polignac number, because 16490999 - 2⁸ = 16490743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16490909) 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 5 ways as a sum of consecutive naturals, for example, 168227 + ... + 168324.

It is an arithmetic number, because the mean of its divisors is an integer number (3197244).

Almost surely, 2^16490999 is an apocalyptic number.

16490999 is a deficient number, since it is larger than the sum of its proper divisors (2692465).

16490999 is an equidigital number, since it uses as much as digits as its factorization.

16490999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336565 (or 336558 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 47.

The square root of 16490999 is about 4060.9111046660. The cubic root of 16490999 is about 254.5358672525.

The spelling of 16490999 in words is "sixteen million, four hundred ninety thousand, nine hundred ninety-nine".