1244834440 has 16 divisors (see below), whose sum is σ = 2800877580. Its totient is φ = 497933760.

The previous prime is 1244834407. The next prime is 1244834441. The reversal of 1244834440 is 444384421.

It can be written as a sum of positive squares in 2 ways, for example, as 1203951204 + 40883236 = 34698^2 + 6394^2 .

It is a super-2 number, since 2×1244834440² = 3099225566020227200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1244834396 and 1244834405.

It is not an unprimeable number, because it can be changed into a prime (1244834441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15560391 + ... + 15560470.

Almost surely, 2^1244834440 is an apocalyptic number.

1244834440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1244834440 is an abundant number, since it is smaller than the sum of its proper divisors (1556043140).

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

1244834440 is a wasteful number, since it uses less digits than its factorization.

1244834440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31120872 (or 31120868 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 34.

The square root of 1244834440 is about 35282.2113819415. The cubic root of 1244834440 is about 1075.7314481142.

The spelling of 1244834440 in words is "one billion, two hundred forty-four million, eight hundred thirty-four thousand, four hundred forty".