755630489 has 4 divisors (see below), whose sum is σ = 766908624. Its totient is φ = 744352356.

The previous prime is 755630483. The next prime is 755630503. The reversal of 755630489 is 984036557.

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 a de Polignac number, because none of the positive numbers 2^k-755630489 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (755630483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5638967 + ... + 5639100.

It is an arithmetic number, because the mean of its divisors is an integer number (191727156).

Almost surely, 2^755630489 is an apocalyptic number.

It is an amenable number.

755630489 is a deficient number, since it is larger than the sum of its proper divisors (11278135).

755630489 is a wasteful number, since it uses less digits than its factorization.

755630489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11278134.

The product of its (nonzero) digits is 907200, while the sum is 47.

The square root of 755630489 is about 27488.7338558909. The cubic root of 755630489 is about 910.8282476624.

The spelling of 755630489 in words is "seven hundred fifty-five million, six hundred thirty thousand, four hundred eighty-nine".