7447117447 has 8 divisors (see below), whose sum is σ = 9284717952. Its totient is φ = 5802948600.

The previous prime is 7447117441. The next prime is 7447117543.

It is a happy number.

7447117447 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 a de Polignac number, because none of the positive numbers 2^k-7447117447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7447117397 and 7447117406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7447117441) 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, 48357829 + ... + 48357982.

It is an arithmetic number, because the mean of its divisors is an integer number (1160589744).

Almost surely, 2^7447117447 is an apocalyptic number.

7447117447 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

7447117447 is a deficient number, since it is larger than the sum of its proper divisors (1837600505).

7447117447 is a wasteful number, since it uses less digits than its factorization.

7447117447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96715829.

The product of its digits is 614656, while the sum is 46.

The square root of 7447117447 is about 86296.6827114461. The cubic root of 7447117447 is about 1952.8223384433.

The spelling of 7447117447 in words is "seven billion, four hundred forty-seven million, one hundred seventeen thousand, four hundred forty-seven".