440415427 has 4 divisors (see below), whose sum is σ = 449786016. Its totient is φ = 431044840.

The previous prime is 440415397. The next prime is 440415433. The reversal of 440415427 is 724514044.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 440415427 - 2¹⁵ = 440382659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (440415467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4685224 + ... + 4685317.

It is an arithmetic number, because the mean of its divisors is an integer number (112446504).

Almost surely, 2^440415427 is an apocalyptic number.

440415427 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

440415427 is a deficient number, since it is larger than the sum of its proper divisors (9370589).

440415427 is an equidigital number, since it uses as much as digits as its factorization.

440415427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9370588.

The product of its (nonzero) digits is 17920, while the sum is 31.

The square root of 440415427 is about 20986.0769797502. The cubic root of 440415427 is about 760.8297879381.

The spelling of 440415427 in words is "four hundred forty million, four hundred fifteen thousand, four hundred twenty-seven".