402442244189 has 2 divisors, whose sum is σ = 402442244190. Its totient is φ = 402442244188.

The previous prime is 402442244143. The next prime is 402442244209. The reversal of 402442244189 is 981442244204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 388929344164 + 13512900025 = 623642^2 + 116245^2 .

It is a cyclic number.

It is not a de Polignac number, because 402442244189 - 2³² = 398147276893 is a prime.

It is a super-3 number, since 3×402442244189³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402442244129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201221122094 + 201221122095.

It is an arithmetic number, because the mean of its divisors is an integer number (201221122095).

Almost surely, 2^402442244189 is an apocalyptic number.

It is an amenable number.

402442244189 is a deficient number, since it is larger than the sum of its proper divisors (1).

402442244189 is an equidigital number, since it uses as much as digits as its factorization.

402442244189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 589824, while the sum is 44.

The spelling of 402442244189 in words is "four hundred two billion, four hundred forty-two million, two hundred forty-four thousand, one hundred eighty-nine".