75797999 has 2 divisors, whose sum is σ = 75798000. Its totient is φ = 75797998.

The previous prime is 75797989. The next prime is 75798029. The reversal of 75797999 is 99979757.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 75797999 - 2⁴ = 75797983 is a prime.

It is a Sophie Germain 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 (75797989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37898999 + 37899000.

It is an arithmetic number, because the mean of its divisors is an integer number (37899000).

Almost surely, 2^75797999 is an apocalyptic number.

75797999 is a deficient number, since it is larger than the sum of its proper divisors (1).

75797999 is an equidigital number, since it uses as much as digits as its factorization.

75797999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11252115, while the sum is 62.

The square root of 75797999 is about 8706.2046265867. The cubic root of 75797999 is about 423.2067444814.

The spelling of 75797999 in words is "seventy-five million, seven hundred ninety-seven thousand, nine hundred ninety-nine".