1234866440 has 32 divisors (see below), whose sum is σ = 2779652160. Its totient is φ = 493732800.

The previous prime is 1234866439. The next prime is 1234866443. The reversal of 1234866440 is 446684321.

1234866440 is nontrivially palindromic in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 1234866394 and 1234866403.

It is not an unprimeable number, because it can be changed into a prime (1234866443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113645 + ... + 124035.

It is an arithmetic number, because the mean of its divisors is an integer number (86864130).

Almost surely, 2^1234866440 is an apocalyptic number.

1234866440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1234866440 is an abundant number, since it is smaller than the sum of its proper divisors (1544785720).

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

1234866440 is a wasteful number, since it uses less digits than its factorization.

1234866440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13373 (or 13369 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 38.

The square root of 1234866440 is about 35140.6664706292. Note that the first 3 decimals coincide. The cubic root of 1234866440 is about 1072.8524467287.

The spelling of 1234866440 in words is "one billion, two hundred thirty-four million, eight hundred sixty-six thousand, four hundred forty".