4949942891 has 2 divisors, whose sum is σ = 4949942892. Its totient is φ = 4949942890.

The previous prime is 4949942869. The next prime is 4949942911. The reversal of 4949942891 is 1982499494.

4949942891 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4949942891 - 2⁶ = 4949942827 is a prime.

It is a super-2 number, since 2×4949942891² = 49003869248322875762, which contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4949942891.

It is not a weakly prime, because it can be changed into another prime (4949942801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2474971445 + 2474971446.

It is an arithmetic number, because the mean of its divisors is an integer number (2474971446).

Almost surely, 2^4949942891 is an apocalyptic number.

4949942891 is a deficient number, since it is larger than the sum of its proper divisors (1).

4949942891 is an equidigital number, since it uses as much as digits as its factorization.

4949942891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6718464, while the sum is 59.

The square root of 4949942891 is about 70355.8305401905. The cubic root of 4949942891 is about 1704.2503667319.

The spelling of 4949942891 in words is "four billion, nine hundred forty-nine million, nine hundred forty-two thousand, eight hundred ninety-one".