440868172079 has 4 divisors (see below), whose sum is σ = 466801593984. Its totient is φ = 414934750176.

The previous prime is 440868172051. The next prime is 440868172081. The reversal of 440868172079 is 970271868044.

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

It is a cyclic number.

It is not a de Polignac number, because 440868172079 - 2⁸ = 440868171823 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 (440868172049) 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, 12966710927 + ... + 12966710960.

It is an arithmetic number, because the mean of its divisors is an integer number (116700398496).

Almost surely, 2^440868172079 is an apocalyptic number.

440868172079 is a deficient number, since it is larger than the sum of its proper divisors (25933421905).

440868172079 is a wasteful number, since it uses less digits than its factorization.

440868172079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25933421904.

The product of its (nonzero) digits is 5419008, while the sum is 56.

The spelling of 440868172079 in words is "four hundred forty billion, eight hundred sixty-eight million, one hundred seventy-two thousand, seventy-nine".