16409973 has 8 divisors (see below), whose sum is σ = 22074048. Its totient is φ = 10842944.

The previous prime is 16409951. The next prime is 16409983. The reversal of 16409973 is 37990461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16409973 - 2⁵ = 16409941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16409933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23865 + ... + 24542.

It is an arithmetic number, because the mean of its divisors is an integer number (2759256).

Almost surely, 2^16409973 is an apocalyptic number.

It is an amenable number.

16409973 is a deficient number, since it is larger than the sum of its proper divisors (5664075).

16409973 is a wasteful number, since it uses less digits than its factorization.

16409973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48523.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 16409973 is about 4050.9224875329. The cubic root of 16409973 is about 254.1183082891.

The spelling of 16409973 in words is "sixteen million, four hundred nine thousand, nine hundred seventy-three".