840367476 has 72 divisors (see below), whose sum is σ = 2325248744. Its totient is φ = 254327040.

The previous prime is 840367471. The next prime is 840367513. The reversal of 840367476 is 674763048.

It can be written as a sum of positive squares in 4 ways, for example, as 35283600 + 805083876 = 5940^2 + 28374^2 .

It is a super-2 number, since 2×840367476² = 1412434989437221152, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840367471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13830 + ... + 43266.

Almost surely, 2^840367476 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 840367476, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1162624372).

840367476 is an abundant number, since it is smaller than the sum of its proper divisors (1484881268).

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

840367476 is a wasteful number, since it uses less digits than its factorization.

840367476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29521 (or 29516 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 45.

The square root of 840367476 is about 28989.0923624732. The cubic root of 840367476 is about 943.6763664259.

The spelling of 840367476 in words is "eight hundred forty million, three hundred sixty-seven thousand, four hundred seventy-six".