804918629 has 2 divisors, whose sum is σ = 804918630. Its totient is φ = 804918628.

The previous prime is 804918617. The next prime is 804918701. The reversal of 804918629 is 926819408.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 670706404 + 134212225 = 25898^2 + 11585^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-804918629 is a prime.

It is a super-2 number, since 2×804918629² = 1295787998622479282, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (804918029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402459314 + 402459315.

It is an arithmetic number, because the mean of its divisors is an integer number (402459315).

Almost surely, 2^804918629 is an apocalyptic number.

It is an amenable number.

804918629 is a deficient number, since it is larger than the sum of its proper divisors (1).

804918629 is an equidigital number, since it uses as much as digits as its factorization.

804918629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 47.

The square root of 804918629 is about 28371.0879065291. The cubic root of 804918629 is about 930.2164020251.

The spelling of 804918629 in words is "eight hundred four million, nine hundred eighteen thousand, six hundred twenty-nine".