440987 has 2 divisors, whose sum is σ = 440988. Its totient is φ = 440986.

The previous prime is 440983. The next prime is 440989. The reversal of 440987 is 789044.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 440987 - 2² = 440983 is a prime.

Together with 440989, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (440983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220493 + 220494.

It is an arithmetic number, because the mean of its divisors is an integer number (220494).

2⁴⁴⁰⁹⁸⁷ is an apocalyptic number.

440987 is a deficient number, since it is larger than the sum of its proper divisors (1).

440987 is an equidigital number, since it uses as much as digits as its factorization.

440987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 440987 is about 664.0685205609. The cubic root of 440987 is about 76.1158781693.

The spelling of 440987 in words is "four hundred forty thousand, nine hundred eighty-seven".