6940509372 has 36 divisors (see below), whose sum is σ = 17546625096. Its totient is φ = 2313165600.

The previous prime is 6940509313. The next prime is 6940509379. The reversal of 6940509372 is 2739050496.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6940509379) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 417622 + ... + 433922.

Almost surely, 2^6940509372 is an apocalyptic number.

It is an amenable number.

6940509372 is an abundant number, since it is smaller than the sum of its proper divisors (10606115724).

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

6940509372 is a wasteful number, since it uses less digits than its factorization.

6940509372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28138 (or 28133 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The square root of 6940509372 is about 83309.7195530029. The cubic root of 6940509372 is about 1907.4966401564.

The spelling of 6940509372 in words is "six billion, nine hundred forty million, five hundred nine thousand, three hundred seventy-two".