16931927 has 2 divisors, whose sum is σ = 16931928. Its totient is φ = 16931926.

The previous prime is 16931923. The next prime is 16931947. The reversal of 16931927 is 72913961.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16931927 - 2² = 16931923 is a prime.

It is a plaindrome in base 13.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16931923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8465963 + 8465964.

It is an arithmetic number, because the mean of its divisors is an integer number (8465964).

Almost surely, 2^16931927 is an apocalyptic number.

16931927 is a deficient number, since it is larger than the sum of its proper divisors (1).

16931927 is an equidigital number, since it uses as much as digits as its factorization.

16931927 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20412, while the sum is 38.

The square root of 16931927 is about 4114.8422813031. The cubic root of 16931927 is about 256.7844943537.

The spelling of 16931927 in words is "sixteen million, nine hundred thirty-one thousand, nine hundred twenty-seven".