487404021 has 16 divisors (see below), whose sum is σ = 700507136. Its totient is φ = 299664576.

The previous prime is 487404019. The next prime is 487404031. The reversal of 487404021 is 120404784.

It is not a de Polignac number, because 487404021 - 2¹ = 487404019 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 487404021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (487404031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42156 + ... + 52458.

It is an arithmetic number, because the mean of its divisors is an integer number (43781696).

Almost surely, 2^487404021 is an apocalyptic number.

It is an amenable number.

487404021 is a deficient number, since it is larger than the sum of its proper divisors (213103115).

487404021 is a wasteful number, since it uses less digits than its factorization.

487404021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11532.

The product of its (nonzero) digits is 7168, while the sum is 30.

The square root of 487404021 is about 22077.2285624804. The cubic root of 487404021 is about 786.9788047402.

The spelling of 487404021 in words is "four hundred eighty-seven million, four hundred four thousand, twenty-one".