804742049 has 2 divisors, whose sum is σ = 804742050. Its totient is φ = 804742048.

The previous prime is 804742031. The next prime is 804742061. The reversal of 804742049 is 940247408.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 776012449 + 28729600 = 27857^2 + 5360^2 .

It is a cyclic number.

It is not a de Polignac number, because 804742049 - 2²⁸ = 536306593 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (804742069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402371024 + 402371025.

It is an arithmetic number, because the mean of its divisors is an integer number (402371025).

Almost surely, 2^804742049 is an apocalyptic number.

It is an amenable number.

804742049 is a deficient number, since it is larger than the sum of its proper divisors (1).

804742049 is an equidigital number, since it uses as much as digits as its factorization.

804742049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 804742049 is about 28367.9757649361. The cubic root of 804742049 is about 930.1483746001.

The spelling of 804742049 in words is "eight hundred four million, seven hundred forty-two thousand, forty-nine".