75345399 has 12 divisors (see below), whose sum is σ = 109527496. Its totient is φ = 49909392.

The previous prime is 75345359. The next prime is 75345409. The reversal of 75345399 is 99354357.

It is not a de Polignac number, because 75345399 - 2⁹ = 75344887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75345329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25249 + ... + 28074.

Almost surely, 2^75345399 is an apocalyptic number.

75345399 is a deficient number, since it is larger than the sum of its proper divisors (34182097).

75345399 is a wasteful number, since it uses less digits than its factorization.

75345399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53486 (or 53483 counting only the distinct ones).

The product of its digits is 510300, while the sum is 45.

The square root of 75345399 is about 8680.1727517371. The cubic root of 75345399 is about 422.3627209428.

The spelling of 75345399 in words is "seventy-five million, three hundred forty-five thousand, three hundred ninety-nine".