487402813 has 8 divisors (see below), whose sum is σ = 502533432. Its totient is φ = 472375296.

The previous prime is 487402781. The next prime is 487402837. The reversal of 487402813 is 318204784.

It can be written as a sum of positive squares in 4 ways, for example, as 201725209 + 285677604 = 14203^2 + 16902^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 487402813 - 2⁵ = 487402781 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (487402873) 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, 16120 + ... + 35137.

It is an arithmetic number, because the mean of its divisors is an integer number (62816679).

Almost surely, 2^487402813 is an apocalyptic number.

It is an amenable number.

487402813 is a deficient number, since it is larger than the sum of its proper divisors (15130619).

487402813 is a wasteful number, since it uses less digits than its factorization.

487402813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51551.

The product of its (nonzero) digits is 43008, while the sum is 37.

The square root of 487402813 is about 22077.2012039570. The cubic root of 487402813 is about 786.9781545806.

The spelling of 487402813 in words is "four hundred eighty-seven million, four hundred two thousand, eight hundred thirteen".