4040485391 has 2 divisors, whose sum is σ = 4040485392. Its totient is φ = 4040485390.

The previous prime is 4040485373. The next prime is 4040485439. The reversal of 4040485391 is 1935840404.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4040485391 - 2⁶ = 4040485327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4040485091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2020242695 + 2020242696.

It is an arithmetic number, because the mean of its divisors is an integer number (2020242696).

Almost surely, 2^4040485391 is an apocalyptic number.

4040485391 is a deficient number, since it is larger than the sum of its proper divisors (1).

4040485391 is an equidigital number, since it uses as much as digits as its factorization.

4040485391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 4040485391 is about 63564.8125223382. The cubic root of 4040485391 is about 1592.7386304601.

The spelling of 4040485391 in words is "four billion, forty million, four hundred eighty-five thousand, three hundred ninety-one".