16899081 has 4 divisors (see below), whose sum is σ = 22532112. Its totient is φ = 11266052.

The previous prime is 16899073. The next prime is 16899097. The reversal of 16899081 is 18099861.

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.

It is a cyclic number.

It is not a de Polignac number, because 16899081 - 2³ = 16899073 is a prime.

It is a super-2 number, since 2×16899081² = 571157877289122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16899031) 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, 2816511 + ... + 2816516.

It is an arithmetic number, because the mean of its divisors is an integer number (5633028).

Almost surely, 2^16899081 is an apocalyptic number.

It is an amenable number.

16899081 is a deficient number, since it is larger than the sum of its proper divisors (5633031).

16899081 is an equidigital number, since it uses as much as digits as its factorization.

16899081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5633030.

The product of its (nonzero) digits is 31104, while the sum is 42.

The square root of 16899081 is about 4110.8491823466. The cubic root of 16899081 is about 256.6183426949.

It can be divided in two parts, 168990 and 81, that added together give a triangular number (169071 = T₅₈₁).

The spelling of 16899081 in words is "sixteen million, eight hundred ninety-nine thousand, eighty-one".