402446 has 12 divisors (see below), whose sum is σ = 663936. Its totient is φ = 182820.

The previous prime is 402443. The next prime is 402487. The reversal of 402446 is 644204.

It is a hoax number, since the sum of its digits (20) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402443) 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 5 ways as a sum of consecutive naturals, for example, 590 + ... + 1073.

It is an arithmetic number, because the mean of its divisors is an integer number (55328).

2⁴⁰²⁴⁴⁶ is an apocalyptic number.

402446 is a deficient number, since it is larger than the sum of its proper divisors (261490).

402446 is a wasteful number, since it uses less digits than its factorization.

402446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1687 (or 1676 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 402446 is about 634.3863176330. The cubic root of 402446 is about 73.8305105642.

It can be divided in two parts, 402 and 446, that added together give a palindrome (848).

The spelling of 402446 in words is "four hundred two thousand, four hundred forty-six".