17972099 has 2 divisors, whose sum is σ = 17972100. Its totient is φ = 17972098.

The previous prime is 17972023. The next prime is 17972117. The reversal of 17972099 is 99027971.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 17972099 - 2⁸ = 17971843 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (17972399) 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, 8986049 + 8986050.

It is an arithmetic number, because the mean of its divisors is an integer number (8986050).

Almost surely, 2^17972099 is an apocalyptic number.

17972099 is a deficient number, since it is larger than the sum of its proper divisors (1).

17972099 is an equidigital number, since it uses as much as digits as its factorization.

17972099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 71442, while the sum is 44.

The square root of 17972099 is about 4239.3512475378. The cubic root of 17972099 is about 261.9386595711.

The spelling of 17972099 in words is "seventeen million, nine hundred seventy-two thousand, ninety-nine".