6749439340 has 36 divisors (see below), whose sum is σ = 16487918496. Its totient is φ = 2314093152.

The previous prime is 6749439337. The next prime is 6749439373. The reversal of 6749439340 is 439349476.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3442612 + ... + 3444571.

It is an arithmetic number, because the mean of its divisors is an integer number (457997736).

Almost surely, 2^6749439340 is an apocalyptic number.

It is an amenable number.

6749439340 is an abundant number, since it is smaller than the sum of its proper divisors (9738479156).

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

6749439340 is a wasteful number, since it uses less digits than its factorization.

6749439340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6887206 (or 6887197 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 49.

The square root of 6749439340 is about 82154.9714868187. The cubic root of 6749439340 is about 1889.8292484057.

The spelling of 6749439340 in words is "six billion, seven hundred forty-nine million, four hundred thirty-nine thousand, three hundred forty".