43133329949 has 4 divisors (see below), whose sum is σ = 43261322364. Its totient is φ = 43005337536.

The previous prime is 43133329903. The next prime is 43133329969. The reversal of 43133329949 is 94992333134.

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

It can be written as a sum of positive squares in 2 ways, for example, as 31726021924 + 11407308025 = 178118^2 + 106805^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43133329949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43133329897 and 43133329906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43133329969) 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, 63995702 + ... + 63996375.

It is an arithmetic number, because the mean of its divisors is an integer number (10815330591).

Almost surely, 2^43133329949 is an apocalyptic number.

It is an amenable number.

43133329949 is a deficient number, since it is larger than the sum of its proper divisors (127992415).

43133329949 is a wasteful number, since it uses less digits than its factorization.

43133329949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127992414.

The product of its digits is 1889568, while the sum is 50.

The spelling of 43133329949 in words is "forty-three billion, one hundred thirty-three million, three hundred twenty-nine thousand, nine hundred forty-nine".