499999394 has 8 divisors (see below), whose sum is σ = 762711120. Its totient is φ = 245762356.

The previous prime is 499999391. The next prime is 499999397. The reversal of 499999394 is 493999994.

It is an interprime number because it is at equal distance from previous prime (499999391) and next prime (499999397).

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 499999394.

It is not an unprimeable number, because it can be changed into a prime (499999391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2118524 + ... + 2118759.

It is an arithmetic number, because the mean of its divisors is an integer number (95338890).

Almost surely, 2^499999394 is an apocalyptic number.

499999394 is a deficient number, since it is larger than the sum of its proper divisors (262711726).

499999394 is a wasteful number, since it uses less digits than its factorization.

499999394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4237344.

The product of its digits is 25509168, while the sum is 65.

The square root of 499999394 is about 22360.6662244218. Note that the first 3 decimals coincide. The cubic root of 499999394 is about 793.7002053290.

The spelling of 499999394 in words is "four hundred ninety-nine million, nine hundred ninety-nine thousand, three hundred ninety-four".