400046 has 4 divisors (see below), whose sum is σ = 600072. Its totient is φ = 200022.

The previous prime is 400033. The next prime is 400051. The reversal of 400046 is 640004.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 400046.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 400046.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100010 + ... + 100013.

It is an arithmetic number, because the mean of its divisors is an integer number (150018).

2⁴⁰⁰⁰⁴⁶ is an apocalyptic number.

400046 is a deficient number, since it is larger than the sum of its proper divisors (200026).

400046 is a wasteful number, since it uses less digits than its factorization.

400046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200025.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 400046 is about 632.4918971813. The cubic root of 400046 is about 73.6834542887.

The spelling of 400046 in words is "four hundred thousand, forty-six".