115440393929 has 4 divisors (see below), whose sum is σ = 131931878784. Its totient is φ = 98948909076.

The previous prime is 115440393923. The next prime is 115440393997. The reversal of 115440393929 is 929393044511.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-115440393929 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (115440393923) 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, 8245742417 + ... + 8245742430.

It is an arithmetic number, because the mean of its divisors is an integer number (32982969696).

Almost surely, 2^115440393929 is an apocalyptic number.

It is an amenable number.

115440393929 is a deficient number, since it is larger than the sum of its proper divisors (16491484855).

115440393929 is an equidigital number, since it uses as much as digits as its factorization.

115440393929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16491484854.

The product of its (nonzero) digits is 1049760, while the sum is 50.

The spelling of 115440393929 in words is "one hundred fifteen billion, four hundred forty million, three hundred ninety-three thousand, nine hundred twenty-nine".