1024172399 has 2 divisors, whose sum is σ = 1024172400. Its totient is φ = 1024172398.

The previous prime is 1024172339. The next prime is 1024172411. The reversal of 1024172399 is 9932714201.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1024172399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1024172309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 512086199 + 512086200.

It is an arithmetic number, because the mean of its divisors is an integer number (512086200).

Almost surely, 2^1024172399 is an apocalyptic number.

1024172399 is a deficient number, since it is larger than the sum of its proper divisors (1).

1024172399 is an equidigital number, since it uses as much as digits as its factorization.

1024172399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 1024172399 is about 32002.6936210063. The cubic root of 1024172399 is about 1007.9934016192.

The spelling of 1024172399 in words is "one billion, twenty-four million, one hundred seventy-two thousand, three hundred ninety-nine".