484631991 has 20 divisors (see below), whose sum is σ = 724599304. Its totient is φ = 322801200.

The previous prime is 484631981. The next prime is 484632023. The reversal of 484631991 is 199136484.

484631991 is a `hidden beast` number, since 4 + 8 + 4 + 631 + 9 + 9 + 1 = 666.

It is not a de Polignac number, because 484631991 - 2⁷ = 484631863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (484631911) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 129456 + ... + 133146.

Almost surely, 2^484631991 is an apocalyptic number.

484631991 is a deficient number, since it is larger than the sum of its proper divisors (239967313).

484631991 is a wasteful number, since it uses less digits than its factorization.

484631991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5324 (or 5315 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 484631991 is about 22014.3587460548. The cubic root of 484631991 is about 785.4840299919.

The spelling of 484631991 in words is "four hundred eighty-four million, six hundred thirty-one thousand, nine hundred ninety-one".