800091029 has 4 divisors (see below), whose sum is σ = 800609100. Its totient is φ = 799572960.

The previous prime is 800091013. The next prime is 800091037. The reversal of 800091029 is 920190008.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 334524100 + 465566929 = 18290^2 + 21577^2 .

It is a cyclic number.

It is not a de Polignac number, because 800091029 - 2⁴ = 800091013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 800090992 and 800091010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (800091049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 256712 + ... + 259809.

It is an arithmetic number, because the mean of its divisors is an integer number (200152275).

Almost surely, 2^800091029 is an apocalyptic number.

It is an amenable number.

800091029 is a deficient number, since it is larger than the sum of its proper divisors (518071).

800091029 is a wasteful number, since it uses less digits than its factorization.

800091029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518070.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 800091029 is about 28285.8803822685. The cubic root of 800091029 is about 928.3529753197.

The spelling of 800091029 in words is "eight hundred million, ninety-one thousand, twenty-nine".