755000809 has 4 divisors (see below), whose sum is σ = 771064704. Its totient is φ = 738936916.

The previous prime is 755000803. The next prime is 755000861. The reversal of 755000809 is 908000557.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 755000809 - 2³ = 755000801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (755000801) 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, 8031877 + ... + 8031970.

It is an arithmetic number, because the mean of its divisors is an integer number (192766176).

Almost surely, 2^755000809 is an apocalyptic number.

It is an amenable number.

755000809 is a deficient number, since it is larger than the sum of its proper divisors (16063895).

755000809 is a wasteful number, since it uses less digits than its factorization.

755000809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16063894.

The product of its (nonzero) digits is 12600, while the sum is 34.

The square root of 755000809 is about 27477.2780493265. The cubic root of 755000809 is about 910.5751743574.

The spelling of 755000809 in words is "seven hundred fifty-five million, eight hundred nine", and thus it is an aban number.