16927949 has 2 divisors, whose sum is σ = 16927950. Its totient is φ = 16927948.

The previous prime is 16927919. The next prime is 16927961. The reversal of 16927949 is 94972961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16662724 + 265225 = 4082^2 + 515^2 .

It is a cyclic number.

It is not a de Polignac number, because 16927949 - 2⁸ = 16927693 is a 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 (16927919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8463974 + 8463975.

It is an arithmetic number, because the mean of its divisors is an integer number (8463975).

Almost surely, 2^16927949 is an apocalyptic number.

It is an amenable number.

16927949 is a deficient number, since it is larger than the sum of its proper divisors (1).

16927949 is an equidigital number, since it uses as much as digits as its factorization.

16927949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 244944, while the sum is 47.

The square root of 16927949 is about 4114.3588807978. The cubic root of 16927949 is about 256.7643830628.

The spelling of 16927949 in words is "sixteen million, nine hundred twenty-seven thousand, nine hundred forty-nine".