397279065447 has 64 divisors (see below), whose sum is σ = 684727948800. Its totient is φ = 224981245440.

The previous prime is 397279065439. The next prime is 397279065457. The reversal of 397279065447 is 744560972793.

397279065447 is a `hidden beast` number, since 39 + 72 + 7 + 90 + 6 + 5 + 447 = 666.

It is not a de Polignac number, because 397279065447 - 2³ = 397279065439 is a prime.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397279065457) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 418773 + ... + 984849.

It is an arithmetic number, because the mean of its divisors is an integer number (10698874200).

Almost surely, 2^397279065447 is an apocalyptic number.

397279065447 is a deficient number, since it is larger than the sum of its proper divisors (287448883353).

397279065447 is a wasteful number, since it uses less digits than its factorization.

397279065447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566253 (or 566247 counting only the distinct ones).

The product of its (nonzero) digits is 80015040, while the sum is 63.

The spelling of 397279065447 in words is "three hundred ninety-seven billion, two hundred seventy-nine million, sixty-five thousand, four hundred forty-seven".