43022639 has 6 divisors (see below), whose sum is σ = 47289480. Its totient is φ = 39111380.

The previous prime is 43022621. The next prime is 43022641. The reversal of 43022639 is 93622034.

43022639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-43022639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43012639) 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 5 ways as a sum of consecutive naturals, for example, 177659 + ... + 177900.

It is an arithmetic number, because the mean of its divisors is an integer number (7881580).

Almost surely, 2^43022639 is an apocalyptic number.

43022639 is a deficient number, since it is larger than the sum of its proper divisors (4266841).

43022639 is a wasteful number, since it uses less digits than its factorization.

43022639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355581 (or 355570 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 43022639 is about 6559.1645047216. The cubic root of 43022639 is about 350.4012785298.

The spelling of 43022639 in words is "forty-three million, twenty-two thousand, six hundred thirty-nine".