4000494 has 8 divisors (see below), whose sum is σ = 8001000. Its totient is φ = 1333496.

The previous prime is 4000489. The next prime is 4000511. The reversal of 4000494 is 4940004.

It is a happy number.

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

4000494 is an admirable number.

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 4000494.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 333369 + ... + 333380.

It is an arithmetic number, because the mean of its divisors is an integer number (1000125).

Almost surely, 2^4000494 is an apocalyptic number.

4000494 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

4000494 is a wasteful number, since it uses less digits than its factorization.

4000494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666754.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 4000494 is about 2000.1234961872. The cubic root of 4000494 is about 158.7466397288.

Adding to 4000494 its reverse (4940004), we get a palindrome (8940498).

The spelling of 4000494 in words is "four million, four hundred ninety-four", and thus it is an aban number.