16912919 has 2 divisors, whose sum is σ = 16912920. Its totient is φ = 16912918.

The previous prime is 16912853. The next prime is 16912933. The reversal of 16912919 is 91921961.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16912919 - 2¹² = 16908823 is a prime.

It is a super-2 number, since 2×16912919² = 572093658201122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16912319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8456459 + 8456460.

It is an arithmetic number, because the mean of its divisors is an integer number (8456460).

Almost surely, 2^16912919 is an apocalyptic number.

16912919 is a deficient number, since it is larger than the sum of its proper divisors (1).

16912919 is an equidigital number, since it uses as much as digits as its factorization.

16912919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8748, while the sum is 38.

The square root of 16912919 is about 4112.5319451647. The cubic root of 16912919 is about 256.6883685104.

The spelling of 16912919 in words is "sixteen million, nine hundred twelve thousand, nine hundred nineteen".