6847972829 has 4 divisors (see below), whose sum is σ = 6850499676. Its totient is φ = 6845445984.

The previous prime is 6847972823. The next prime is 6847972841. The reversal of 6847972829 is 9282797486.

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 6512167204 + 335805625 = 80698^2 + 18325^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6847972829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6847972823) 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, 1259354 + ... + 1264779.

It is an arithmetic number, because the mean of its divisors is an integer number (1712624919).

Almost surely, 2^6847972829 is an apocalyptic number.

It is an amenable number.

6847972829 is a deficient number, since it is larger than the sum of its proper divisors (2526847).

6847972829 is a wasteful number, since it uses less digits than its factorization.

6847972829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2526846.

The product of its digits is 24385536, while the sum is 62.

The square root of 6847972829 is about 82752.4792921638. The cubic root of 6847972829 is about 1898.9812478558.

The spelling of 6847972829 in words is "six billion, eight hundred forty-seven million, nine hundred seventy-two thousand, eight hundred twenty-nine".