43926393009 has 4 divisors (see below), whose sum is σ = 58568524016. Its totient is φ = 29284262004.

The previous prime is 43926392977. The next prime is 43926393011. The reversal of 43926393009 is 90039362934.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 43926393009 - 2⁵ = 43926392977 is a prime.

It is a super-2 number, since 2×43926393009² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (43926393079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7321065499 + ... + 7321065504.

It is an arithmetic number, because the mean of its divisors is an integer number (14642131004).

Almost surely, 2^43926393009 is an apocalyptic number.

It is an amenable number.

43926393009 is a deficient number, since it is larger than the sum of its proper divisors (14642131007).

43926393009 is a wasteful number, since it uses less digits than its factorization.

43926393009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14642131006.

The product of its (nonzero) digits is 944784, while the sum is 48.

The spelling of 43926393009 in words is "forty-three billion, nine hundred twenty-six million, three hundred ninety-three thousand, nine".