43442719 has 2 divisors, whose sum is σ = 43442720. Its totient is φ = 43442718.

The previous prime is 43442689. The next prime is 43442731. The reversal of 43442719 is 91724434.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43442719 - 2¹¹ = 43440671 is a prime.

It is a super-2 number, since 2×43442719² = 3774539668225922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43442779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21721359 + 21721360.

It is an arithmetic number, because the mean of its divisors is an integer number (21721360).

Almost surely, 2^43442719 is an apocalyptic number.

43442719 is a deficient number, since it is larger than the sum of its proper divisors (1).

43442719 is an equidigital number, since it uses as much as digits as its factorization.

43442719 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 34.

The square root of 43442719 is about 6591.1090872478. The cubic root of 43442719 is about 351.5380448991.

The spelling of 43442719 in words is "forty-three million, four hundred forty-two thousand, seven hundred nineteen".