487199421 has 8 divisors (see below), whose sum is σ = 721776960. Its totient is φ = 324799596.

The previous prime is 487199381. The next prime is 487199423. The reversal of 487199421 is 124991784.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-487199421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (487199423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9022185 + ... + 9022238.

It is an arithmetic number, because the mean of its divisors is an integer number (90222120).

Almost surely, 2^487199421 is an apocalyptic number.

It is an amenable number.

487199421 is a deficient number, since it is larger than the sum of its proper divisors (234577539).

487199421 is a wasteful number, since it uses less digits than its factorization.

487199421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18044432 (or 18044426 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 487199421 is about 22072.5943423060. The cubic root of 487199421 is about 786.8686713314.

The spelling of 487199421 in words is "four hundred eighty-seven million, one hundred ninety-nine thousand, four hundred twenty-one".