6939899340 has 144 divisors (see below), whose sum is σ = 22483426560. Its totient is φ = 1593820800.

The previous prime is 6939899303. The next prime is 6939899353. The reversal of 6939899340 is 439989396.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 112785 + ... + 163095.

Almost surely, 2^6939899340 is an apocalyptic number.

6939899340 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6939899340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11241713280).

6939899340 is an abundant number, since it is smaller than the sum of its proper divisors (15543527220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6939899340 is a wasteful number, since it uses less digits than its factorization.

6939899340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50364 (or 50351 counting only the distinct ones).

The product of its (nonzero) digits is 11337408, while the sum is 60.

The square root of 6939899340 is about 83306.0582430834. The cubic root of 6939899340 is about 1907.4407524196.

The spelling of 6939899340 in words is "six billion, nine hundred thirty-nine million, eight hundred ninety-nine thousand, three hundred forty".