6909973426 has 4 divisors (see below), whose sum is σ = 10364960142. Its totient is φ = 3454986712.

The previous prime is 6909973351. The next prime is 6909973429. The reversal of 6909973426 is 6243799096.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 5009100625 + 1900872801 = 70775^2 + 43599^2 .

It is not an unprimeable number, because it can be changed into a prime (6909973429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1727493355 + ... + 1727493358.

Almost surely, 2^6909973426 is an apocalyptic number.

6909973426 is a deficient number, since it is larger than the sum of its proper divisors (3454986716).

6909973426 is a wasteful number, since it uses less digits than its factorization.

6909973426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3454986715.

The product of its (nonzero) digits is 4408992, while the sum is 55.

The square root of 6909973426 is about 83126.2499214298. The cubic root of 6909973426 is about 1904.6950760104.

The spelling of 6909973426 in words is "six billion, nine hundred nine million, nine hundred seventy-three thousand, four hundred twenty-six".