6844509494 has 4 divisors (see below), whose sum is σ = 10266764244. Its totient is φ = 3422254746.

The previous prime is 6844509493. The next prime is 6844509509. The reversal of 6844509494 is 4949054486.

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

It is a super-2 number, since 2×6844509494² = 93694620426912272072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6844509493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1711127372 + ... + 1711127375.

It is an arithmetic number, because the mean of its divisors is an integer number (2566691061).

Almost surely, 2^6844509494 is an apocalyptic number.

6844509494 is a deficient number, since it is larger than the sum of its proper divisors (3422254750).

6844509494 is a wasteful number, since it uses less digits than its factorization.

6844509494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3422254749.

The product of its (nonzero) digits is 4976640, while the sum is 53.

The square root of 6844509494 is about 82731.5507771975. The cubic root of 6844509494 is about 1898.6610598027.

The spelling of 6844509494 in words is "six billion, eight hundred forty-four million, five hundred nine thousand, four hundred ninety-four".