440888969 has 2 divisors, whose sum is σ = 440888970. Its totient is φ = 440888968.

The previous prime is 440888953. The next prime is 440888971. The reversal of 440888969 is 969888044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 379470400 + 61418569 = 19480^2 + 7837^2 .

It is a cyclic number.

It is not a de Polignac number, because 440888969 - 2⁴ = 440888953 is a prime.

It is a super-2 number, since 2×440888969² = 388766165971765922, which contains 22 as substring.

Together with 440888971, 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 (440888269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220444484 + 220444485.

It is an arithmetic number, because the mean of its divisors is an integer number (220444485).

Almost surely, 2^440888969 is an apocalyptic number.

It is an amenable number.

440888969 is a deficient number, since it is larger than the sum of its proper divisors (1).

440888969 is an equidigital number, since it uses as much as digits as its factorization.

440888969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3981312, while the sum is 56.

The square root of 440888969 is about 20997.3562383458. The cubic root of 440888969 is about 761.1023758830.

The spelling of 440888969 in words is "four hundred forty million, eight hundred eighty-eight thousand, nine hundred sixty-nine".