75990443 has 4 divisors (see below), whose sum is σ = 79989960. Its totient is φ = 71990928.

The previous prime is 75990427. The next prime is 75990457. The reversal of 75990443 is 34409957.

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

It is a cyclic number.

It is not a de Polignac number, because 75990443 - 2⁴ = 75990427 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 75990443.

It is not an unprimeable number, because it can be changed into a prime (75990463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1999730 + ... + 1999767.

It is an arithmetic number, because the mean of its divisors is an integer number (19997490).

Almost surely, 2^75990443 is an apocalyptic number.

75990443 is a deficient number, since it is larger than the sum of its proper divisors (3999517).

75990443 is a wasteful number, since it uses less digits than its factorization.

75990443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3999516.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 75990443 is about 8717.2497383062. The cubic root of 75990443 is about 423.5646025207.

The spelling of 75990443 in words is "seventy-five million, nine hundred ninety thousand, four hundred forty-three".