499642587 has 20 divisors (see below), whose sum is σ = 756613000. Its totient is φ = 328528224.

The previous prime is 499642579. The next prime is 499642613. The reversal of 499642587 is 785246994.

It is not a de Polignac number, because 499642587 - 2³ = 499642579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (499642567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 36337 + ... + 48162.

It is an arithmetic number, because the mean of its divisors is an integer number (37830650).

Almost surely, 2^499642587 is an apocalyptic number.

499642587 is a deficient number, since it is larger than the sum of its proper divisors (256970413).

499642587 is an equidigital number, since it uses as much as digits as its factorization.

499642587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84584 (or 84575 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The square root of 499642587 is about 22352.6863486249. The cubic root of 499642587 is about 793.5113616463.

It can be divided in two parts, 49 and 9642587, that added together give a triangular number (9642636 = T₄₃₉₁).

The spelling of 499642587 in words is "four hundred ninety-nine million, six hundred forty-two thousand, five hundred eighty-seven".