440043899 has 2 divisors, whose sum is σ = 440043900. Its totient is φ = 440043898.

The previous prime is 440043887. The next prime is 440043917. The reversal of 440043899 is 998340044.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-440043899 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (440043829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220021949 + 220021950.

It is an arithmetic number, because the mean of its divisors is an integer number (220021950).

Almost surely, 2^440043899 is an apocalyptic number.

440043899 is a deficient number, since it is larger than the sum of its proper divisors (1).

440043899 is an equidigital number, since it uses as much as digits as its factorization.

440043899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 440043899 is about 20977.2233386595. The cubic root of 440043899 is about 760.6157861308.

The spelling of 440043899 in words is "four hundred forty million, forty-three thousand, eight hundred ninety-nine".