6912907440 has 40 divisors (see below), whose sum is σ = 21430013808. Its totient is φ = 1843441920.

The previous prime is 6912907409. The next prime is 6912907481. The reversal of 6912907440 is 447092196.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 6912907392 and 6912907401.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 14401651 + ... + 14402130.

Almost surely, 2^6912907440 is an apocalyptic number.

6912907440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6912907440 is an abundant number, since it is smaller than the sum of its proper divisors (14517106368).

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

6912907440 is a wasteful number, since it uses less digits than its factorization.

6912907440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28803797 (or 28803791 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 6912907440 is about 83143.8959876190. The cubic root of 6912907440 is about 1904.9646193166.

The spelling of 6912907440 in words is "six billion, nine hundred twelve million, nine hundred seven thousand, four hundred forty".