4087785491 has 2 divisors, whose sum is σ = 4087785492. Its totient is φ = 4087785490.

The previous prime is 4087785479. The next prime is 4087785529. The reversal of 4087785491 is 1945877804.

It is a happy number.

4087785491 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 is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4087785491 is a prime.

It is a super-2 number, since 2×4087785491² = 33419980440860222162, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (4087785421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2043892745 + 2043892746.

It is an arithmetic number, because the mean of its divisors is an integer number (2043892746).

Almost surely, 2^4087785491 is an apocalyptic number.

4087785491 is a deficient number, since it is larger than the sum of its proper divisors (1).

4087785491 is an equidigital number, since it uses as much as digits as its factorization.

4087785491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2257920, while the sum is 53.

The square root of 4087785491 is about 63935.7919400393. The cubic root of 4087785491 is about 1598.9296866519.

The spelling of 4087785491 in words is "four billion, eighty-seven million, seven hundred eighty-five thousand, four hundred ninety-one".