6455947309 has 8 divisors (see below), whose sum is σ = 7379716608. Its totient is φ = 5532550800.

The previous prime is 6455947291. The next prime is 6455947321. The reversal of 6455947309 is 9037495546.

It is a happy number.

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

It is not a de Polignac number, because 6455947309 - 2¹¹ = 6455945261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6455947369) 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, 55042 + ... + 126259.

It is an arithmetic number, because the mean of its divisors is an integer number (922464576).

Almost surely, 2^6455947309 is an apocalyptic number.

It is an amenable number.

6455947309 is a deficient number, since it is larger than the sum of its proper divisors (923769299).

6455947309 is a wasteful number, since it uses less digits than its factorization.

6455947309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186395.

The product of its (nonzero) digits is 4082400, while the sum is 52.

The square root of 6455947309 is about 80348.9098183665. The cubic root of 6455947309 is about 1862.0299367409.

The spelling of 6455947309 in words is "six billion, four hundred fifty-five million, nine hundred forty-seven thousand, three hundred nine".