43420959 has 24 divisors (see below), whose sum is σ = 64318800. Its totient is φ = 28218240.

The previous prime is 43420957. The next prime is 43420961. The reversal of 43420959 is 95902434.

It is an interprime number because it is at equal distance from previous prime (43420957) and next prime (43420961).

It is not a de Polignac number, because 43420959 - 2¹ = 43420957 is a prime.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43420957) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 76027 + ... + 76595.

It is an arithmetic number, because the mean of its divisors is an integer number (2679950).

Almost surely, 2^43420959 is an apocalyptic number.

43420959 is a deficient number, since it is larger than the sum of its proper divisors (20897841).

43420959 is a wasteful number, since it uses less digits than its factorization.

43420959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775 (or 772 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 43420959 is about 6589.4581719592. The cubic root of 43420959 is about 351.4793411963.

The spelling of 43420959 in words is "forty-three million, four hundred twenty thousand, nine hundred fifty-nine".