4040208989 has 2 divisors, whose sum is σ = 4040208990. Its totient is φ = 4040208988.

The previous prime is 4040208973. The next prime is 4040209067. The reversal of 4040208989 is 9898020404.

It is a happy number.

4040208989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2204772025 + 1835436964 = 46955^2 + 42842^2 .

It is a cyclic number.

It is not a de Polignac number, because 4040208989 - 2⁴ = 4040208973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4040208919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2020104494 + 2020104495.

It is an arithmetic number, because the mean of its divisors is an integer number (2020104495).

Almost surely, 2^4040208989 is an apocalyptic number.

It is an amenable number.

4040208989 is a deficient number, since it is larger than the sum of its proper divisors (1).

4040208989 is an equidigital number, since it uses as much as digits as its factorization.

4040208989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 4040208989 is about 63562.6383105673. The cubic root of 4040208989 is about 1592.7023108813.

The spelling of 4040208989 in words is "four billion, forty million, two hundred eight thousand, nine hundred eighty-nine".