422849490 has 64 divisors (see below), whose sum is σ = 1165936896. Its totient is φ = 96141312.

The previous prime is 422849443. The next prime is 422849491. The reversal of 422849490 is 94948224.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (422849491) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35314 + ... + 45746.

It is an arithmetic number, because the mean of its divisors is an integer number (18217764).

Almost surely, 2^422849490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 422849490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (582968448).

422849490 is an abundant number, since it is smaller than the sum of its proper divisors (743087406).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

422849490 is a wasteful number, since it uses less digits than its factorization.

422849490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10643.

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 422849490 is about 20563.3044523491. The cubic root of 422849490 is about 750.5770314879.

The spelling of 422849490 in words is "four hundred twenty-two million, eight hundred forty-nine thousand, four hundred ninety".