487047421 has 4 divisors (see below), whose sum is σ = 556625632. Its totient is φ = 417469212.

The previous prime is 487047409. The next prime is 487047437. The reversal of 487047421 is 124740784.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 487047421 - 2²³ = 478658813 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 (487047221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34789095 + ... + 34789108.

It is an arithmetic number, because the mean of its divisors is an integer number (139156408).

Almost surely, 2^487047421 is an apocalyptic number.

It is an amenable number.

487047421 is a deficient number, since it is larger than the sum of its proper divisors (69578211).

487047421 is an equidigital number, since it uses as much as digits as its factorization.

487047421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69578210.

The product of its (nonzero) digits is 50176, while the sum is 37.

The square root of 487047421 is about 22069.1508898734. The cubic root of 487047421 is about 786.7868318263.

The spelling of 487047421 in words is "four hundred eighty-seven million, forty-seven thousand, four hundred twenty-one".