43989480 has 80 divisors (see below), whose sum is σ = 147864420. Its totient is φ = 11729664.

The previous prime is 43989461. The next prime is 43989481. The reversal of 43989480 is 8498934.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 41757444 + 2232036 = 6462^2 + 1494^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (43989481) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3549 + ... + 10028.

Almost surely, 2^43989480 is an apocalyptic number.

43989480 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

43989480 is an abundant number, since it is smaller than the sum of its proper divisors (103874940).

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

43989480 is a wasteful number, since it uses less digits than its factorization.

43989480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13600 (or 13587 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 43989480 is about 6632.4565584706. The cubic root of 43989480 is about 353.0066954835.

The spelling of 43989480 in words is "forty-three million, nine hundred eighty-nine thousand, four hundred eighty".