43490380 has 24 divisors (see below), whose sum is σ = 91460880. Its totient is φ = 17371200.

The previous prime is 43490371. The next prime is 43490383. The reversal of 43490380 is 8309434.

43490380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (43490383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19986 + ... + 22054.

It is an arithmetic number, because the mean of its divisors is an integer number (3810870).

Almost surely, 2^43490380 is an apocalyptic number.

It is an amenable number.

43490380 is an abundant number, since it is smaller than the sum of its proper divisors (47970500).

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

43490380 is a wasteful number, since it uses less digits than its factorization.

43490380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3129 (or 3127 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 43490380 is about 6594.7236484935. The cubic root of 43490380 is about 351.6665553584. Note that the first 3 decimals are identical.

The spelling of 43490380 in words is "forty-three million, four hundred ninety thousand, three hundred eighty".