849877801 has 2 divisors, whose sum is σ = 849877802. Its totient is φ = 849877800.

The previous prime is 849877789. The next prime is 849877871. The reversal of 849877801 is 108778948.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 793267225 + 56610576 = 28165^2 + 7524^2 .

It is a cyclic number.

It is not a de Polignac number, because 849877801 - 2¹¹ = 849875753 is a prime.

It is not a weakly prime, because it can be changed into another prime (849877871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 424938900 + 424938901.

It is an arithmetic number, because the mean of its divisors is an integer number (424938901).

Almost surely, 2^849877801 is an apocalyptic number.

It is an amenable number.

849877801 is a deficient number, since it is larger than the sum of its proper divisors (1).

849877801 is an equidigital number, since it uses as much as digits as its factorization.

849877801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 903168, while the sum is 52.

The square root of 849877801 is about 29152.6637033394. The cubic root of 849877801 is about 947.2228408020. Note that the first 3 decimals are identical.

The spelling of 849877801 in words is "eight hundred forty-nine million, eight hundred seventy-seven thousand, eight hundred one".