440555879 has 2 divisors, whose sum is σ = 440555880. Its totient is φ = 440555878.

The previous prime is 440555821. The next prime is 440555897. The reversal of 440555879 is 978555044.

It is a happy number.

Together with next prime (440555897) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 440555879 - 2¹⁶ = 440490343 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440555779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220277939 + 220277940.

It is an arithmetic number, because the mean of its divisors is an integer number (220277940).

Almost surely, 2^440555879 is an apocalyptic number.

440555879 is a deficient number, since it is larger than the sum of its proper divisors (1).

440555879 is an equidigital number, since it uses as much as digits as its factorization.

440555879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008000, while the sum is 47.

The square root of 440555879 is about 20989.4230268485. The cubic root of 440555879 is about 760.9106575757.

The spelling of 440555879 in words is "four hundred forty million, five hundred fifty-five thousand, eight hundred seventy-nine".