814440040 has 32 divisors (see below), whose sum is σ = 1838990880. Its totient is φ = 324620352.

The previous prime is 814440019. The next prime is 814440047. The reversal of 814440040 is 40044418.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 814439987 and 814440014.

It is not an unprimeable number, because it can be changed into a prime (814440047) 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, 24654 + ... + 47293.

It is an arithmetic number, because the mean of its divisors is an integer number (57468465).

Almost surely, 2^814440040 is an apocalyptic number.

It is an amenable number.

814440040 is an abundant number, since it is smaller than the sum of its proper divisors (1024550840).

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

814440040 is a wasteful number, since it uses less digits than its factorization.

814440040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72241 (or 72237 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 25.

The square root of 814440040 is about 28538.3958904491. The cubic root of 814440040 is about 933.8698881981.

Adding to 814440040 its reverse (40044418), we get a palindrome (854484458).

It can be divided in two parts, 8144 and 40040, that added together give a palindrome (48184).

The spelling of 814440040 in words is "eight hundred fourteen million, four hundred forty thousand, forty".