440240400191 has 2 divisors, whose sum is σ = 440240400192. Its totient is φ = 440240400190.

The previous prime is 440240400043. The next prime is 440240400233. The reversal of 440240400191 is 191004042044.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 440240400191 - 2²² = 440236205887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440248400191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220120200095 + 220120200096.

It is an arithmetic number, because the mean of its divisors is an integer number (220120200096).

Almost surely, 2^440240400191 is an apocalyptic number.

440240400191 is a deficient number, since it is larger than the sum of its proper divisors (1).

440240400191 is an equidigital number, since it uses as much as digits as its factorization.

440240400191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 29.

The spelling of 440240400191 in words is "four hundred forty billion, two hundred forty million, four hundred thousand, one hundred ninety-one".