6908239845 has 128 divisors (see below), whose sum is σ = 13679124480. Its totient is φ = 3285826560.

The previous prime is 6908239837. The next prime is 6908239847. The reversal of 6908239845 is 5489328096.

It is not a de Polignac number, because 6908239845 - 2³ = 6908239837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6908239791 and 6908239800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6908239847) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 12402307 + ... + 12402863.

It is an arithmetic number, because the mean of its divisors is an integer number (106868160).

Almost surely, 2^6908239845 is an apocalyptic number.

6908239845 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6908239845 is a deficient number, since it is larger than the sum of its proper divisors (6770884635).

6908239845 is a wasteful number, since it uses less digits than its factorization.

6908239845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812 (or 806 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The square root of 6908239845 is about 83115.8218692446. The cubic root of 6908239845 is about 1904.5357787569.

It can be divided in two parts, 6908 and 239845, that added together give a triangular number (246753 = T₇₀₂).

The spelling of 6908239845 in words is "six billion, nine hundred eight million, two hundred thirty-nine thousand, eight hundred forty-five".