6909993 has 12 divisors (see below), whose sum is σ = 10303488. Its totient is φ = 4457880.

The previous prime is 6909983. The next prime is 6909997. The reversal of 6909993 is 3999096.

It is not a de Polignac number, because 6909993 - 2¹⁰ = 6908969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6909997) 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, 12105 + ... + 12662.

It is an arithmetic number, because the mean of its divisors is an integer number (858624).

Almost surely, 2^6909993 is an apocalyptic number.

It is an amenable number.

6909993 is a deficient number, since it is larger than the sum of its proper divisors (3393495).

6909993 is a wasteful number, since it uses less digits than its factorization.

6909993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24804 (or 24801 counting only the distinct ones).

The product of its (nonzero) digits is 118098, while the sum is 45.

The square root of 6909993 is about 2628.6865541559. The cubic root of 6909993 is about 190.4696874496.

The spelling of 6909993 in words is "six million, nine hundred nine thousand, nine hundred ninety-three".