75965399 has 4 divisors (see below), whose sum is σ = 76675464. Its totient is φ = 75255336.

The previous prime is 75965387. The next prime is 75965411. The reversal of 75965399 is 99356957.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (75965387) and next prime (75965411).

It is a cyclic number.

It is not a de Polignac number, because 75965399 - 2⁸ = 75965143 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 75965399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75965339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 354872 + ... + 355085.

It is an arithmetic number, because the mean of its divisors is an integer number (19168866).

Almost surely, 2^75965399 is an apocalyptic number.

75965399 is a deficient number, since it is larger than the sum of its proper divisors (710065).

75965399 is a wasteful number, since it uses less digits than its factorization.

75965399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710064.

The product of its digits is 2296350, while the sum is 53.

The square root of 75965399 is about 8715.8131577036. The cubic root of 75965399 is about 423.5180663291.

The spelling of 75965399 in words is "seventy-five million, nine hundred sixty-five thousand, three hundred ninety-nine".