16944407 has 2 divisors, whose sum is σ = 16944408. Its totient is φ = 16944406.

The previous prime is 16944349. The next prime is 16944437. The reversal of 16944407 is 70444961.

It is a strong prime.

It is an emirp because it is prime and its reverse (70444961) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16944407 - 2²² = 12750103 is a prime.

It is a super-2 number, since 2×16944407² = 574225857163298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16944437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8472203 + 8472204.

It is an arithmetic number, because the mean of its divisors is an integer number (8472204).

Almost surely, 2^16944407 is an apocalyptic number.

16944407 is a deficient number, since it is larger than the sum of its proper divisors (1).

16944407 is an equidigital number, since it uses as much as digits as its factorization.

16944407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 16944407 is about 4116.3584634966. The cubic root of 16944407 is about 256.8475681640.

The spelling of 16944407 in words is "sixteen million, nine hundred forty-four thousand, four hundred seven".