499982391 has 12 divisors (see below), whose sum is σ = 722422168. Its totient is φ = 333217584.

The previous prime is 499982387. The next prime is 499982401. The reversal of 499982391 is 193289994.

It is not a de Polignac number, because 499982391 - 2² = 499982387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (499982191) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31641 + ... + 44733.

Almost surely, 2^499982391 is an apocalyptic number.

499982391 is a deficient number, since it is larger than the sum of its proper divisors (222439777).

499982391 is a wasteful number, since it uses less digits than its factorization.

499982391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17342 (or 17339 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 54.

The square root of 499982391 is about 22360.2860223209. The cubic root of 499982391 is about 793.6912083597.

The spelling of 499982391 in words is "four hundred ninety-nine million, nine hundred eighty-two thousand, three hundred ninety-one".