440089939 has 2 divisors, whose sum is σ = 440089940. Its totient is φ = 440089938.

The previous prime is 440089891. The next prime is 440089957. The reversal of 440089939 is 939980044.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 440089939 - 2⁹ = 440089427 is a prime.

It is not a weakly prime, because it can be changed into another prime (440089339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220044969 + 220044970.

It is an arithmetic number, because the mean of its divisors is an integer number (220044970).

Almost surely, 2^440089939 is an apocalyptic number.

440089939 is a deficient number, since it is larger than the sum of its proper divisors (1).

440089939 is an equidigital number, since it uses as much as digits as its factorization.

440089939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 440089939 is about 20978.3206906559. The cubic root of 440089939 is about 760.6423119158.

The spelling of 440089939 in words is "four hundred forty million, eighty-nine thousand, nine hundred thirty-nine".