862449822 has 64 divisors (see below), whose sum is σ = 2130616320. Its totient is φ = 256802400.

The previous prime is 862449811. The next prime is 862449823. The reversal of 862449822 is 228944268.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (862449823) 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, 1947 + ... + 41577.

It is an arithmetic number, because the mean of its divisors is an integer number (33290880).

Almost surely, 2^862449822 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 862449822, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1065308160).

862449822 is an abundant number, since it is smaller than the sum of its proper divisors (1268166498).

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

862449822 is a wasteful number, since it uses less digits than its factorization.

862449822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39686 (or 39680 counting only the distinct ones).

The product of its digits is 442368, while the sum is 45.

The square root of 862449822 is about 29367.4960117474. The cubic root of 862449822 is about 951.8706711482.

The spelling of 862449822 in words is "eight hundred sixty-two million, four hundred forty-nine thousand, eight hundred twenty-two".