16940207 has 4 divisors (see below), whose sum is σ = 17154720. Its totient is φ = 16725696.

The previous prime is 16940201. The next prime is 16940219. The reversal of 16940207 is 70204961.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16940207 - 2¹² = 16936111 is a prime.

It is a super-2 number, since 2×16940207² = 573941226405698, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16940207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16940201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107138 + ... + 107295.

It is an arithmetic number, because the mean of its divisors is an integer number (4288680).

Almost surely, 2^16940207 is an apocalyptic number.

16940207 is a deficient number, since it is larger than the sum of its proper divisors (214513).

16940207 is an equidigital number, since it uses as much as digits as its factorization.

16940207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214512.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 16940207 is about 4115.8482722277. The cubic root of 16940207 is about 256.8263448595.

The spelling of 16940207 in words is "sixteen million, nine hundred forty thousand, two hundred seven".