75349399 has 2 divisors, whose sum is σ = 75349400. Its totient is φ = 75349398.

The previous prime is 75349397. The next prime is 75349441. The reversal of 75349399 is 99394357.

It is a weak prime.

It is an emirp because it is prime and its reverse (99394357) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75349399 - 2¹ = 75349397 is a prime.

It is a super-2 number, since 2×75349399² = 11355063859322402, which contains 22 as substring.

Together with 75349397, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75349397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37674699 + 37674700.

It is an arithmetic number, because the mean of its divisors is an integer number (37674700).

Almost surely, 2^75349399 is an apocalyptic number.

75349399 is a deficient number, since it is larger than the sum of its proper divisors (1).

75349399 is an equidigital number, since it uses as much as digits as its factorization.

75349399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 918540, while the sum is 49.

The square root of 75349399 is about 8680.4031588400. The cubic root of 75349399 is about 422.3701950598.

The spelling of 75349399 in words is "seventy-five million, three hundred forty-nine thousand, three hundred ninety-nine".