402229 has 4 divisors (see below), whose sum is σ = 404140. Its totient is φ = 400320.

The previous prime is 402223. The next prime is 402239. The reversal of 402229 is 922204.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 260100 + 142129 = 510^2 + 377^2 .

It is a cyclic number.

It is not a de Polignac number, because 402229 - 2³ = 402221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402221) 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, 594 + ... + 1075.

It is an arithmetic number, because the mean of its divisors is an integer number (101035).

2⁴⁰²²²⁹ is an apocalyptic number.

It is an amenable number.

402229 is a deficient number, since it is larger than the sum of its proper divisors (1911).

402229 is a wasteful number, since it uses less digits than its factorization.

402229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1910.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 402229 is about 634.2152631402. The cubic root of 402229 is about 73.8172383064.

The spelling of 402229 in words is "four hundred two thousand, two hundred twenty-nine".