508099986 has 64 divisors (see below), whose sum is σ = 1164533760. Its totient is φ = 164126160.

The previous prime is 508099973. The next prime is 508100023. The reversal of 508099986 is 689990805.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 270631 + ... + 272501.

It is an arithmetic number, because the mean of its divisors is an integer number (18195840).

Almost surely, 2^508099986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 508099986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (582266880).

508099986 is an abundant number, since it is smaller than the sum of its proper divisors (656433774).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

508099986 is a wasteful number, since it uses less digits than its factorization.

508099986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2036 (or 2030 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 54.

The square root of 508099986 is about 22541.0733107366. The cubic root of 508099986 is about 797.9635632637.

The spelling of 508099986 in words is "five hundred eight million, ninety-nine thousand, nine hundred eighty-six".