6729239397 has 4 divisors (see below), whose sum is σ = 8972319200. Its totient is φ = 4486159596.

The previous prime is 6729239389. The next prime is 6729239411. The reversal of 6729239397 is 7939329276.

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 6729239397 - 2³ = 6729239389 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 (6729239357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1121539897 + ... + 1121539902.

It is an arithmetic number, because the mean of its divisors is an integer number (2243079800).

Almost surely, 2^6729239397 is an apocalyptic number.

It is an amenable number.

6729239397 is a deficient number, since it is larger than the sum of its proper divisors (2243079803).

6729239397 is a wasteful number, since it uses less digits than its factorization.

6729239397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2243079802.

The product of its digits is 7715736, while the sum is 57.

The square root of 6729239397 is about 82031.9413216584. The cubic root of 6729239397 is about 1887.9420501827.

The spelling of 6729239397 in words is "six billion, seven hundred twenty-nine million, two hundred thirty-nine thousand, three hundred ninety-seven".