474545991 has 8 divisors (see below), whose sum is σ = 633107200. Its totient is φ = 316174392.

The previous prime is 474545989. The next prime is 474545993. The reversal of 474545991 is 199545474.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (474545989) and next prime (474545993).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 474545991 - 2¹ = 474545989 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 474545991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (474545993) 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 7 ways as a sum of consecutive naturals, for example, 41455 + ... + 51648.

It is an arithmetic number, because the mean of its divisors is an integer number (79138400).

Almost surely, 2^474545991 is an apocalyptic number.

474545991 is a deficient number, since it is larger than the sum of its proper divisors (158561209).

474545991 is a wasteful number, since it uses less digits than its factorization.

474545991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94805.

The product of its digits is 907200, while the sum is 48.

The square root of 474545991 is about 21784.0765468725. The cubic root of 474545991 is about 779.9967077442.

The spelling of 474545991 in words is "four hundred seventy-four million, five hundred forty-five thousand, nine hundred ninety-one".