801796129 has 4 divisors (see below), whose sum is σ = 804175684. Its totient is φ = 799416576.

The previous prime is 801796087. The next prime is 801796207. The reversal of 801796129 is 921697108.

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 256480225 + 545315904 = 16015^2 + 23352^2 .

It is a cyclic number.

It is not a de Polignac number, because 801796129 - 2⁷ = 801796001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (801796529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1189272 + ... + 1189945.

It is an arithmetic number, because the mean of its divisors is an integer number (201043921).

Almost surely, 2^801796129 is an apocalyptic number.

It is an amenable number.

801796129 is a deficient number, since it is larger than the sum of its proper divisors (2379555).

801796129 is a wasteful number, since it uses less digits than its factorization.

801796129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2379554.

The product of its (nonzero) digits is 54432, while the sum is 43.

The square root of 801796129 is about 28316.0048205957. The cubic root of 801796129 is about 929.0119884607.

The spelling of 801796129 in words is "eight hundred one million, seven hundred ninety-six thousand, one hundred twenty-nine".