43449871240 has 64 divisors (see below), whose sum is σ = 98190500400. Its totient is φ = 17303949312.

The previous prime is 43449871229. The next prime is 43449871271. The reversal of 43449871240 is 4217894434.

It can be written as a sum of positive squares in 8 ways, for example, as 12840969124 + 30608902116 = 113318^2 + 174954^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14934906 + ... + 14937814.

Almost surely, 2^43449871240 is an apocalyptic number.

43449871240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43449871240 is an abundant number, since it is smaller than the sum of its proper divisors (54740629160).

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

43449871240 is a wasteful number, since it uses less digits than its factorization.

43449871240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4426 (or 4422 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 46.

The spelling of 43449871240 in words is "forty-three billion, four hundred forty-nine million, eight hundred seventy-one thousand, two hundred forty".