7447447447 has 8 divisors (see below), whose sum is σ = 8176238352. Its totient is φ = 6727281600.

The previous prime is 7447447421. The next prime is 7447447507.

7447447447 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 7447447447 - 2²⁷ = 7313229719 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7447447394 and 7447447403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7447442447) 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, 2154454 + ... + 2157907.

It is an arithmetic number, because the mean of its divisors is an integer number (1022029794).

Almost surely, 2^7447447447 is an apocalyptic number.

7447447447 is a deficient number, since it is larger than the sum of its proper divisors (728790905).

7447447447 is a wasteful number, since it uses less digits than its factorization.

7447447447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4312529.

The product of its digits is 9834496, while the sum is 52.

The square root of 7447447447 is about 86298.5946988710. The cubic root of 7447447447 is about 1952.8511827963.

The spelling of 7447447447 in words is "seven billion, four hundred forty-seven million, four hundred forty-seven thousand, four hundred forty-seven".