440087 has 2 divisors, whose sum is σ = 440088. Its totient is φ = 440086.

The previous prime is 440047. The next prime is 440093. The reversal of 440087 is 780044.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 440087 - 2⁶ = 440023 is a prime.

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 440087.

It is not a weakly prime, because it can be changed into another prime (440047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220043 + 220044.

It is an arithmetic number, because the mean of its divisors is an integer number (220044).

2⁴⁴⁰⁰⁸⁷ is an apocalyptic number.

440087 is a deficient number, since it is larger than the sum of its proper divisors (1).

440087 is an equidigital number, since it uses as much as digits as its factorization.

440087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 440087 is about 663.3905335472. The cubic root of 440087 is about 76.0640618677.

The spelling of 440087 in words is "four hundred forty thousand, eighty-seven".