422387 has 8 divisors (see below), whose sum is σ = 489216. Its totient is φ = 357192.

The previous prime is 422377. The next prime is 422393. The reversal of 422387 is 783224.

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

It is a cyclic number.

It is not a de Polignac number, because 422387 - 2¹⁸ = 160243 is a prime.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (422377) 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, 218 + ... + 944.

It is an arithmetic number, because the mean of its divisors is an integer number (61152).

2⁴²²³⁸⁷ is an apocalyptic number.

422387 is a deficient number, since it is larger than the sum of its proper divisors (66829).

422387 is an equidigital number, since it uses as much as digits as its factorization.

422387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817.

The product of its digits is 2688, while the sum is 26.

The square root of 422387 is about 649.9130711103. The cubic root of 422387 is about 75.0303284749.

The spelling of 422387 in words is "four hundred twenty-two thousand, three hundred eighty-seven".