6869156729 has 4 divisors (see below), whose sum is σ = 6956108160. Its totient is φ = 6782205300.

The previous prime is 6869156713. The next prime is 6869156797. The reversal of 6869156729 is 9276519686.

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 not a de Polignac number, because 6869156729 - 2⁴ = 6869156713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6869156929) 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, 43475597 + ... + 43475754.

It is an arithmetic number, because the mean of its divisors is an integer number (1739027040).

Almost surely, 2^6869156729 is an apocalyptic number.

It is an amenable number.

6869156729 is a deficient number, since it is larger than the sum of its proper divisors (86951431).

6869156729 is an equidigital number, since it uses as much as digits as its factorization.

6869156729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86951430.

The product of its digits is 9797760, while the sum is 59.

The square root of 6869156729 is about 82880.3760186934. The cubic root of 6869156729 is about 1900.9373702491.

The spelling of 6869156729 in words is "six billion, eight hundred sixty-nine million, one hundred fifty-six thousand, seven hundred twenty-nine".