16940797 has 4 divisors (see below), whose sum is σ = 16994556. Its totient is φ = 16887040.

The previous prime is 16940773. The next prime is 16940827. The reversal of 16940797 is 79704961.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79704961 = 7 ⋅11386423.

It can be written as a sum of positive squares in 2 ways, for example, as 5285401 + 11655396 = 2299^2 + 3414^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16940797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16940717) 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, 26404 + ... + 27037.

It is an arithmetic number, because the mean of its divisors is an integer number (4248639).

Almost surely, 2^16940797 is an apocalyptic number.

It is an amenable number.

16940797 is a deficient number, since it is larger than the sum of its proper divisors (53759).

16940797 is an equidigital number, since it uses as much as digits as its factorization.

16940797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53758.

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 16940797 is about 4115.9199457715. The cubic root of 16940797 is about 256.8293264402.

The spelling of 16940797 in words is "sixteen million, nine hundred forty thousand, seven hundred ninety-seven".