4091689747 has 2 divisors, whose sum is σ = 4091689748. Its totient is φ = 4091689746.

The previous prime is 4091689699. The next prime is 4091689753. The reversal of 4091689747 is 7479861904.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4091689747 - 2²³ = 4083301139 is a prime.

It is not a weakly prime, because it can be changed into another prime (4091681747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2045844873 + 2045844874.

It is an arithmetic number, because the mean of its divisors is an integer number (2045844874).

Almost surely, 2^4091689747 is an apocalyptic number.

4091689747 is a deficient number, since it is larger than the sum of its proper divisors (1).

4091689747 is an equidigital number, since it uses as much as digits as its factorization.

4091689747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3048192, while the sum is 55.

The square root of 4091689747 is about 63966.3172849587. The cubic root of 4091689747 is about 1599.4385721629.

The spelling of 4091689747 in words is "four billion, ninety-one million, six hundred eighty-nine thousand, seven hundred forty-seven".