484981991 has 4 divisors (see below), whose sum is σ = 522288312. Its totient is φ = 447675672.

The previous prime is 484981969. The next prime is 484982009. The reversal of 484981991 is 199189484.

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 484981991 - 2⁶ = 484981927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (484981921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18653141 + ... + 18653166.

It is an arithmetic number, because the mean of its divisors is an integer number (130572078).

Almost surely, 2^484981991 is an apocalyptic number.

484981991 is a deficient number, since it is larger than the sum of its proper divisors (37306321).

484981991 is a wasteful number, since it uses less digits than its factorization.

484981991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37306320.

The product of its digits is 746496, while the sum is 53.

The square root of 484981991 is about 22022.3066684669. The cubic root of 484981991 is about 785.6730760173.

The spelling of 484981991 in words is "four hundred eighty-four million, nine hundred eighty-one thousand, nine hundred ninety-one".