805165429 has 2 divisors, whose sum is σ = 805165430. Its totient is φ = 805165428.

The previous prime is 805165409. The next prime is 805165433. The reversal of 805165429 is 924561508.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 615139204 + 190026225 = 24802^2 + 13785^2 .

It is a cyclic number.

It is not a de Polignac number, because 805165429 - 2⁵ = 805165397 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 805165391 and 805165400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (805165409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402582714 + 402582715.

It is an arithmetic number, because the mean of its divisors is an integer number (402582715).

Almost surely, 2^805165429 is an apocalyptic number.

It is an amenable number.

805165429 is a deficient number, since it is larger than the sum of its proper divisors (1).

805165429 is an equidigital number, since it uses as much as digits as its factorization.

805165429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400, while the sum is 40.

The square root of 805165429 is about 28375.4370715237. The cubic root of 805165429 is about 930.3114650289.

The spelling of 805165429 in words is "eight hundred five million, one hundred sixty-five thousand, four hundred twenty-nine".