4385040691 has 2 divisors, whose sum is σ = 4385040692. Its totient is φ = 4385040690.

The previous prime is 4385040659. The next prime is 4385040719. The reversal of 4385040691 is 1960405834.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4385040691 - 2⁵ = 4385040659 is a prime.

It is not a weakly prime, because it can be changed into another prime (4385040391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2192520345 + 2192520346.

It is an arithmetic number, because the mean of its divisors is an integer number (2192520346).

Almost surely, 2^4385040691 is an apocalyptic number.

4385040691 is a deficient number, since it is larger than the sum of its proper divisors (1).

4385040691 is an equidigital number, since it uses as much as digits as its factorization.

4385040691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 4385040691 is about 66219.6397679722. The cubic root of 4385040691 is about 1636.7833902334.

The spelling of 4385040691 in words is "four billion, three hundred eighty-five million, forty thousand, six hundred ninety-one".