402202189 has 8 divisors (see below), whose sum is σ = 416547000. Its totient is φ = 387889152.

The previous prime is 402202181. The next prime is 402202217. The reversal of 402202189 is 981202204.

It can be written as a sum of positive squares in 4 ways, for example, as 31832164 + 370370025 = 5642^2 + 19245^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 402202189 - 2³ = 402202181 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 (402202181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19477 + ... + 34405.

It is an arithmetic number, because the mean of its divisors is an integer number (52068375).

Almost surely, 2^402202189 is an apocalyptic number.

It is an amenable number.

402202189 is a deficient number, since it is larger than the sum of its proper divisors (14344811).

402202189 is a wasteful number, since it uses less digits than its factorization.

402202189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15887.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 402202189 is about 20054.9791573065. The cubic root of 402202189 is about 738.1559814785.

The spelling of 402202189 in words is "four hundred two million, two hundred two thousand, one hundred eighty-nine".