447388491 has 16 divisors (see below), whose sum is σ = 654651648. Its totient is φ = 269517600.

The previous prime is 447388463. The next prime is 447388519. The reversal of 447388491 is 194883744.

It is an interprime number because it is at equal distance from previous prime (447388463) and next prime (447388519).

It is not a de Polignac number, because 447388491 - 2⁷ = 447388363 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 447388491.

It is not an unprimeable number, because it can be changed into a prime (447388451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35080 + ... + 46101.

It is an arithmetic number, because the mean of its divisors is an integer number (40915728).

Almost surely, 2^447388491 is an apocalyptic number.

447388491 is a deficient number, since it is larger than the sum of its proper divisors (207263157).

447388491 is a wasteful number, since it uses less digits than its factorization.

447388491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81362.

The product of its digits is 774144, while the sum is 48.

The square root of 447388491 is about 21151.5600133891. The cubic root of 447388491 is about 764.8241673719.

The spelling of 447388491 in words is "four hundred forty-seven million, three hundred eighty-eight thousand, four hundred ninety-one".