43344142399 has 4 divisors (see below), whose sum is σ = 43533418360. Its totient is φ = 43154866440.

The previous prime is 43344142393. The next prime is 43344142417. The reversal of 43344142399 is 99324144334.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43344142399 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 (43344142393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94637637 + ... + 94638094.

It is an arithmetic number, because the mean of its divisors is an integer number (10883354590).

Almost surely, 2^43344142399 is an apocalyptic number.

43344142399 is a deficient number, since it is larger than the sum of its proper divisors (189275961).

43344142399 is a wasteful number, since it uses less digits than its factorization.

43344142399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189275960.

The product of its digits is 1119744, while the sum is 46.

The spelling of 43344142399 in words is "forty-three billion, three hundred forty-four million, one hundred forty-two thousand, three hundred ninety-nine".