16408099 has 4 divisors (see below), whose sum is σ = 16653064. Its totient is φ = 16163136.

The previous prime is 16408087. The next prime is 16408127. The reversal of 16408099 is 99080461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99080461 = 223 ⋅444307.

It is a cyclic number.

It is not a de Polignac number, because 16408099 - 2⁷ = 16407971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16408199) 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, 122382 + ... + 122515.

It is an arithmetic number, because the mean of its divisors is an integer number (4163266).

Almost surely, 2^16408099 is an apocalyptic number.

16408099 is a deficient number, since it is larger than the sum of its proper divisors (244965).

16408099 is an equidigital number, since it uses as much as digits as its factorization.

16408099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244964.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 16408099 is about 4050.6911755897. The cubic root of 16408099 is about 254.1086345816.

The spelling of 16408099 in words is "sixteen million, four hundred eight thousand, ninety-nine".