401994 has 24 divisors (see below), whose sum is σ = 909792. Its totient is φ = 128040.

The previous prime is 401993. The next prime is 402023. The reversal of 401994 is 499104.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (401993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72 + ... + 899.

It is an arithmetic number, because the mean of its divisors is an integer number (37908).

2⁴⁰¹⁹⁹⁴ is an apocalyptic number.

401994 is an abundant number, since it is smaller than the sum of its proper divisors (507798).

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

401994 is a wasteful number, since it uses less digits than its factorization.

401994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002 (or 999 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 401994 is about 634.0299677460. The cubic root of 401994 is about 73.8028597389.

The spelling of 401994 in words is "four hundred one thousand, nine hundred ninety-four".