43459424891 has 2 divisors, whose sum is σ = 43459424892. Its totient is φ = 43459424890.

The previous prime is 43459424867. The next prime is 43459424917. The reversal of 43459424891 is 19842495434.

It is a happy number.

43459424891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43459424891 is a prime.

It is a super-2 number, since 2×43459424891² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (43459444891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21729712445 + 21729712446.

It is an arithmetic number, because the mean of its divisors is an integer number (21729712446).

Almost surely, 2^43459424891 is an apocalyptic number.

43459424891 is a deficient number, since it is larger than the sum of its proper divisors (1).

43459424891 is an equidigital number, since it uses as much as digits as its factorization.

43459424891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4976640, while the sum is 53.

The spelling of 43459424891 in words is "forty-three billion, four hundred fifty-nine million, four hundred twenty-four thousand, eight hundred ninety-one".