493990815 has 8 divisors (see below), whose sum is σ = 790385328. Its totient is φ = 263461760.

The previous prime is 493990769. The next prime is 493990831. The reversal of 493990815 is 518099394.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 493990815 - 2⁸ = 493990559 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 16466346 + ... + 16466375.

It is an arithmetic number, because the mean of its divisors is an integer number (98798166).

Almost surely, 2^493990815 is an apocalyptic number.

493990815 is a deficient number, since it is larger than the sum of its proper divisors (296394513).

493990815 is a wasteful number, since it uses less digits than its factorization.

493990815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32932729.

The product of its (nonzero) digits is 349920, while the sum is 48.

The square root of 493990815 is about 22225.9041435888. The cubic root of 493990815 is about 790.5080399301.

The spelling of 493990815 in words is "four hundred ninety-three million, nine hundred ninety thousand, eight hundred fifteen".