4001440999 has 2 divisors, whose sum is σ = 4001441000. Its totient is φ = 4001440998.

The previous prime is 4001440969. The next prime is 4001441027. The reversal of 4001440999 is 9990441004.

4001440999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4001440999 - 2¹³ = 4001432807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4001440969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2000720499 + 2000720500.

It is an arithmetic number, because the mean of its divisors is an integer number (2000720500).

Almost surely, 2^4001440999 is an apocalyptic number.

4001440999 is a deficient number, since it is larger than the sum of its proper divisors (1).

4001440999 is an equidigital number, since it uses as much as digits as its factorization.

4001440999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 4001440999 is about 63256.9442749174. The cubic root of 4001440999 is about 1587.5916493599.

The spelling of 4001440999 in words is "four billion, one million, four hundred forty thousand, nine hundred ninety-nine".