16990833 has 4 divisors (see below), whose sum is σ = 22654448. Its totient is φ = 11327220.

The previous prime is 16990817. The next prime is 16990843. The reversal of 16990833 is 33809961.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33809961 = 3 ⋅11269987.

It is not a de Polignac number, because 16990833 - 2⁴ = 16990817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16990791 and 16990800.

It is not an unprimeable number, because it can be changed into a prime (16990843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2831803 + ... + 2831808.

It is an arithmetic number, because the mean of its divisors is an integer number (5663612).

Almost surely, 2^16990833 is an apocalyptic number.

It is an amenable number.

16990833 is a deficient number, since it is larger than the sum of its proper divisors (5663615).

16990833 is an equidigital number, since it uses as much as digits as its factorization.

16990833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5663614.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 16990833 is about 4121.9938136780. The cubic root of 16990833 is about 257.0819332298.

The spelling of 16990833 in words is "sixteen million, nine hundred ninety thousand, eight hundred thirty-three".