804043949 has 2 divisors, whose sum is σ = 804043950. Its totient is φ = 804043948.

The previous prime is 804043921. The next prime is 804043963. The reversal of 804043949 is 949340408.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 744907849 + 59136100 = 27293^2 + 7690^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-804043949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (804043979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402021974 + 402021975.

It is an arithmetic number, because the mean of its divisors is an integer number (402021975).

Almost surely, 2^804043949 is an apocalyptic number.

It is an amenable number.

804043949 is a deficient number, since it is larger than the sum of its proper divisors (1).

804043949 is an equidigital number, since it uses as much as digits as its factorization.

804043949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 804043949 is about 28355.6687277870. The cubic root of 804043949 is about 929.8793341730.

The spelling of 804043949 in words is "eight hundred four million, forty-three thousand, nine hundred forty-nine".