6447734953 has 8 divisors (see below), whose sum is σ = 7149203136. Its totient is φ = 5765485200.

The previous prime is 6447734947. The next prime is 6447734957. The reversal of 6447734953 is 3594377446.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6447734953 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6447734953.

It is not an unprimeable number, because it can be changed into a prime (6447734957) 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, 4803901 + ... + 4805242.

It is an arithmetic number, because the mean of its divisors is an integer number (893650392).

Almost surely, 2^6447734953 is an apocalyptic number.

It is an amenable number.

6447734953 is a deficient number, since it is larger than the sum of its proper divisors (701468183).

6447734953 is a wasteful number, since it uses less digits than its factorization.

6447734953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9609215.

The product of its digits is 7620480, while the sum is 52.

The square root of 6447734953 is about 80297.7892161422. The cubic root of 6447734953 is about 1861.2400634377.

The spelling of 6447734953 in words is "six billion, four hundred forty-seven million, seven hundred thirty-four thousand, nine hundred fifty-three".