6909994 has 16 divisors (see below), whose sum is σ = 12757248. Its totient is φ = 2733552.

The previous prime is 6909983. The next prime is 6909997. The reversal of 6909994 is 4999096.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 18802 + ... + 19165.

It is an arithmetic number, because the mean of its divisors is an integer number (797328).

Almost surely, 2^6909994 is an apocalyptic number.

6909994 is a deficient number, since it is larger than the sum of its proper divisors (5847254).

6909994 is a wasteful number, since it uses less digits than its factorization.

6909994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37989.

The product of its (nonzero) digits is 157464, while the sum is 46.

The square root of 6909994 is about 2628.6867443650. The cubic root of 6909994 is about 190.4696966377.

The spelling of 6909994 in words is "six million, nine hundred nine thousand, nine hundred ninety-four".