499837638 has 24 divisors (see below), whose sum is σ = 1061942472. Its totient is φ = 156811264.

The previous prime is 499837627. The next prime is 499837651. The reversal of 499837638 is 836738994.

It is a happy number.

It is a super-2 number, since 2×499837638² = 499675328722838088, which contains 22 as substring.

499837638 is a modest number, since divided by 37638 gives 4998 as remainder.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 142395 + ... + 145862.

It is an arithmetic number, because the mean of its divisors is an integer number (44247603).

Almost surely, 2^499837638 is an apocalyptic number.

499837638 is an abundant number, since it is smaller than the sum of its proper divisors (562104834).

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

499837638 is a wasteful number, since it uses less digits than its factorization.

499837638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288296 (or 288279 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 57.

The square root of 499837638 is about 22357.0489555308. The cubic root of 499837638 is about 793.6146054801.

The spelling of 499837638 in words is "four hundred ninety-nine million, eight hundred thirty-seven thousand, six hundred thirty-eight".