16406913 has 4 divisors (see below), whose sum is σ = 21875888. Its totient is φ = 10937940.

The previous prime is 16406891. The next prime is 16406917. The reversal of 16406913 is 31960461.

16406913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 de Polignac number, because none of the positive numbers 2^k-16406913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16406917) 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, 2734483 + ... + 2734488.

It is an arithmetic number, because the mean of its divisors is an integer number (5468972).

Almost surely, 2^16406913 is an apocalyptic number.

It is an amenable number.

16406913 is a deficient number, since it is larger than the sum of its proper divisors (5468975).

16406913 is an equidigital number, since it uses as much as digits as its factorization.

16406913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5468974.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 16406913 is about 4050.5447781749. The cubic root of 16406913 is about 254.1025119933.

The spelling of 16406913 in words is "sixteen million, four hundred six thousand, nine hundred thirteen".