16890349 has 16 divisors (see below), whose sum is σ = 20563200. Its totient is φ = 13841520.

The previous prime is 16890347. The next prime is 16890371. The reversal of 16890349 is 94309861.

It is not a de Polignac number, because 16890349 - 2¹ = 16890347 is a prime.

It is a super-3 number, since 3×16890349³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16890347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6819 + ... + 8959.

It is an arithmetic number, because the mean of its divisors is an integer number (1285200).

Almost surely, 2^16890349 is an apocalyptic number.

It is an amenable number.

16890349 is a deficient number, since it is larger than the sum of its proper divisors (3672851).

16890349 is an equidigital number, since it uses as much as digits as its factorization.

16890349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2185 (or 2171 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 16890349 is about 4109.7869774479. The cubic root of 16890349 is about 256.5741356079.

The spelling of 16890349 in words is "sixteen million, eight hundred ninety thousand, three hundred forty-nine".