75244399 has 2 divisors, whose sum is σ = 75244400. Its totient is φ = 75244398.

The previous prime is 75244361. The next prime is 75244423. The reversal of 75244399 is 99344257.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75244399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75244319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37622199 + 37622200.

It is an arithmetic number, because the mean of its divisors is an integer number (37622200).

Almost surely, 2^75244399 is an apocalyptic number.

75244399 is a deficient number, since it is larger than the sum of its proper divisors (1).

75244399 is an equidigital number, since it uses as much as digits as its factorization.

75244399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 43.

The square root of 75244399 is about 8674.3529441682. The cubic root of 75244399 is about 422.1739117574.

The spelling of 75244399 in words is "seventy-five million, two hundred forty-four thousand, three hundred ninety-nine".