43964490 has 64 divisors (see below), whose sum is σ = 109143936. Its totient is φ = 11327232.

The previous prime is 43964489. The next prime is 43964491. The reversal of 43964490 is 9446934.

43964490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (43964489) and next prime (43964491).

It is not an unprimeable number, because it can be changed into a prime (43964491) 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 31 ways as a sum of consecutive naturals, for example, 223072 + ... + 223268.

It is an arithmetic number, because the mean of its divisors is an integer number (1705374).

Almost surely, 2^43964490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43964490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54571968).

43964490 is an abundant number, since it is smaller than the sum of its proper divisors (65179446).

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

43964490 is a wasteful number, since it uses less digits than its factorization.

43964490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423.

The product of its (nonzero) digits is 93312, while the sum is 39.

The square root of 43964490 is about 6630.5723734833. The cubic root of 43964490 is about 352.9398362531.

The spelling of 43964490 in words is "forty-three million, nine hundred sixty-four thousand, four hundred ninety".