43490856 has 32 divisors (see below), whose sum is σ = 109022400. Its totient is φ = 14457600.

The previous prime is 43490851. The next prime is 43490857. The reversal of 43490856 is 65809434.

43490856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×43490856² = 3782909111225472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (43490851) 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, 7365 + ... + 11883.

It is an arithmetic number, because the mean of its divisors is an integer number (3406950).

Almost surely, 2^43490856 is an apocalyptic number.

It is an amenable number.

43490856 is an abundant number, since it is smaller than the sum of its proper divisors (65531544).

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

43490856 is a wasteful number, since it uses less digits than its factorization.

43490856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4929 (or 4925 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 43490856 is about 6594.7597378525. The cubic root of 43490856 is about 351.6678383445.

The spelling of 43490856 in words is "forty-three million, four hundred ninety thousand, eight hundred fifty-six".