16413309 has 24 divisors (see below), whose sum is σ = 25994592. Its totient is φ = 9897120.

The previous prime is 16413289. The next prime is 16413317. The reversal of 16413309 is 90331461.

It is not a de Polignac number, because 16413309 - 2⁷ = 16413181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16413349) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31122 + ... + 31644.

It is an arithmetic number, because the mean of its divisors is an integer number (1083108).

Almost surely, 2^16413309 is an apocalyptic number.

It is an amenable number.

16413309 is a deficient number, since it is larger than the sum of its proper divisors (9581283).

16413309 is a wasteful number, since it uses less digits than its factorization.

16413309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857 (or 854 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 16413309 is about 4051.3342246722. The cubic root of 16413309 is about 254.1355271116.

It can be divided in two parts, 1641 and 3309, that added together give a triangular number (4950 = T₉₉).

The spelling of 16413309 in words is "sixteen million, four hundred thirteen thousand, three hundred nine".