801729049 has 4 divisors (see below), whose sum is σ = 874613520. Its totient is φ = 728844580.

The previous prime is 801729043. The next prime is 801729053. The reversal of 801729049 is 940927108.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 801729049 - 2²⁷ = 667511321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (801729043) 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, 36442219 + ... + 36442240.

It is an arithmetic number, because the mean of its divisors is an integer number (218653380).

Almost surely, 2^801729049 is an apocalyptic number.

It is an amenable number.

801729049 is a deficient number, since it is larger than the sum of its proper divisors (72884471).

801729049 is a wasteful number, since it uses less digits than its factorization.

801729049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72884470.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 801729049 is about 28314.8203066875. The cubic root of 801729049 is about 928.9860800201.

The spelling of 801729049 in words is "eight hundred one million, seven hundred twenty-nine thousand, forty-nine".