487994831 has 8 divisors (see below), whose sum is σ = 499640064. Its totient is φ = 476363160.

The previous prime is 487994827. The next prime is 487994851. The reversal of 487994831 is 138499784.

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 487994831 - 2² = 487994827 is a prime.

It is a super-2 number, since 2×487994831² = 476277910165437122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (487994851) 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 7 ways as a sum of consecutive naturals, for example, 141530 + ... + 144936.

It is an arithmetic number, because the mean of its divisors is an integer number (62455008).

Almost surely, 2^487994831 is an apocalyptic number.

487994831 is a deficient number, since it is larger than the sum of its proper divisors (11645233).

487994831 is a wasteful number, since it uses less digits than its factorization.

487994831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6781.

The product of its digits is 1741824, while the sum is 53.

The square root of 487994831 is about 22090.6050392469. The cubic root of 487994831 is about 787.2966568628.

The spelling of 487994831 in words is "four hundred eighty-seven million, nine hundred ninety-four thousand, eight hundred thirty-one".