43394780009 has 8 divisors (see below), whose sum is σ = 49717713408. Its totient is φ = 37102766400.

The previous prime is 43394779973. The next prime is 43394780059. The reversal of 43394780009 is 90008749334.

43394780009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-43394780009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43394780059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7726937 + ... + 7732550.

It is an arithmetic number, because the mean of its divisors is an integer number (6214714176).

Almost surely, 2^43394780009 is an apocalyptic number.

It is an amenable number.

43394780009 is a deficient number, since it is larger than the sum of its proper divisors (6322933399).

43394780009 is a wasteful number, since it uses less digits than its factorization.

43394780009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15459895.

The product of its (nonzero) digits is 653184, while the sum is 47.

The spelling of 43394780009 in words is "forty-three billion, three hundred ninety-four million, seven hundred eighty thousand, nine".