474927987 has 4 divisors (see below), whose sum is σ = 633237320. Its totient is φ = 316618656.

The previous prime is 474927979. The next prime is 474928001. The reversal of 474927987 is 789729474.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 474927987 - 2³ = 474927979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (474927907) 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, 79154662 + ... + 79154667.

It is an arithmetic number, because the mean of its divisors is an integer number (158309330).

Almost surely, 2^474927987 is an apocalyptic number.

474927987 is a deficient number, since it is larger than the sum of its proper divisors (158309333).

474927987 is a wasteful number, since it uses less digits than its factorization.

474927987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158309332.

The product of its digits is 7112448, while the sum is 57.

The square root of 474927987 is about 21792.8425635574. The cubic root of 474927987 is about 780.2059433189.

The spelling of 474927987 in words is "four hundred seventy-four million, nine hundred twenty-seven thousand, nine hundred eighty-seven".