447772747 has 4 divisors (see below), whose sum is σ = 447831496. Its totient is φ = 447714000.

The previous prime is 447772739. The next prime is 447772781. The reversal of 447772747 is 747277744.

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

It is a cyclic number.

It is not a de Polignac number, because 447772747 - 2³ = 447772739 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 447772747.

It is not an unprimeable number, because it can be changed into a prime (447772447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15873 + ... + 33874.

It is an arithmetic number, because the mean of its divisors is an integer number (111957874).

Almost surely, 2^447772747 is an apocalyptic number.

447772747 is a deficient number, since it is larger than the sum of its proper divisors (58749).

447772747 is an equidigital number, since it uses as much as digits as its factorization.

447772747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58748.

The product of its digits is 2151296, while the sum is 49.

The square root of 447772747 is about 21160.6414600314. The cubic root of 447772747 is about 765.0430704672.

It can be divided in two parts, 44777 and 2747, that added together give a square (47524 = 218²).

The spelling of 447772747 in words is "four hundred forty-seven million, seven hundred seventy-two thousand, seven hundred forty-seven".