16924997 has 2 divisors, whose sum is σ = 16924998. Its totient is φ = 16924996.

The previous prime is 16924993. The next prime is 16925017. The reversal of 16924997 is 79942961.

It is a Cunningham number, because it is equal to 4114²+1.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16924996 + 1 = 4114^2 + 1^2 .

It is a cyclic number.

It is not a de Polignac number, because 16924997 - 2² = 16924993 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 (16924993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8462498 + 8462499.

It is an arithmetic number, because the mean of its divisors is an integer number (8462499).

Almost surely, 2^16924997 is an apocalyptic number.

It is an amenable number.

16924997 is a deficient number, since it is larger than the sum of its proper divisors (1).

16924997 is an equidigital number, since it uses as much as digits as its factorization.

16924997 is an odious number, because the sum of its binary digits is odd.

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

The square root of 16924997 is about 4114.0001215362. Note that the first 3 decimals coincide. The cubic root of 16924997 is about 256.7494568103.

The spelling of 16924997 in words is "sixteen million, nine hundred twenty-four thousand, nine hundred ninety-seven".