440064019 has 2 divisors, whose sum is σ = 440064020. Its totient is φ = 440064018.

The previous prime is 440064011. The next prime is 440064043. The reversal of 440064019 is 910460044.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 440064019 - 2³ = 440064011 is a prime.

It is a super-2 number, since 2×440064019² = 387312681636864722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (440064011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220032009 + 220032010.

It is an arithmetic number, because the mean of its divisors is an integer number (220032010).

Almost surely, 2^440064019 is an apocalyptic number.

440064019 is a deficient number, since it is larger than the sum of its proper divisors (1).

440064019 is an equidigital number, since it uses as much as digits as its factorization.

440064019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 440064019 is about 20977.7029009375. The cubic root of 440064019 is about 760.6273784260.

The spelling of 440064019 in words is "four hundred forty million, sixty-four thousand, nineteen".