402166443 has 16 divisors (see below), whose sum is σ = 613198080. Its totient is φ = 229669536.

The previous prime is 402166423. The next prime is 402166447. The reversal of 402166443 is 344661204.

It is not a de Polignac number, because 402166443 - 2⁵ = 402166411 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 402166443.

It is not an unprimeable number, because it can be changed into a prime (402166447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36721 + ... + 46397.

It is an arithmetic number, because the mean of its divisors is an integer number (38324880).

Almost surely, 2^402166443 is an apocalyptic number.

402166443 is a deficient number, since it is larger than the sum of its proper divisors (211031637).

402166443 is a wasteful number, since it uses less digits than its factorization.

402166443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11666.

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 402166443 is about 20054.0879373758. The cubic root of 402166443 is about 738.1341127881.

The spelling of 402166443 in words is "four hundred two million, one hundred sixty-six thousand, four hundred forty-three".