487431021 has 32 divisors (see below), whose sum is σ = 857945088. Its totient is φ = 238314240.

The previous prime is 487431013. The next prime is 487431023. The reversal of 487431021 is 120134784.

It is not a de Polignac number, because 487431021 - 2³ = 487431013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 487431021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (487431023) 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 31 ways as a sum of consecutive naturals, for example, 58135 + ... + 65988.

It is an arithmetic number, because the mean of its divisors is an integer number (26810784).

Almost surely, 2^487431021 is an apocalyptic number.

It is an amenable number.

487431021 is a deficient number, since it is larger than the sum of its proper divisors (370514067).

487431021 is a wasteful number, since it uses less digits than its factorization.

487431021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124161.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 487431021 is about 22077.8400438086. The cubic root of 487431021 is about 786.9933361723.

The spelling of 487431021 in words is "four hundred eighty-seven million, four hundred thirty-one thousand, twenty-one".