447140257 has 8 divisors (see below), whose sum is σ = 453785760. Its totient is φ = 440508960.

The previous prime is 447140233. The next prime is 447140279. The reversal of 447140257 is 752041744.

It is a happy number.

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 447140257 - 2¹⁵ = 447107489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (447140207) 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, 71382 + ... + 77392.

It is an arithmetic number, because the mean of its divisors is an integer number (56723220).

Almost surely, 2^447140257 is an apocalyptic number.

It is an amenable number.

447140257 is a deficient number, since it is larger than the sum of its proper divisors (6645503).

447140257 is a wasteful number, since it uses less digits than its factorization.

447140257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7103.

The product of its (nonzero) digits is 31360, while the sum is 34.

The square root of 447140257 is about 21145.6912159428. The cubic root of 447140257 is about 764.6826866895.

The spelling of 447140257 in words is "four hundred forty-seven million, one hundred forty thousand, two hundred fifty-seven".