447273440 has 24 divisors (see below), whose sum is σ = 1056683880. Its totient is φ = 178909312.

The previous prime is 447273397. The next prime is 447273461. The reversal of 447273440 is 44372744.

It is a self number, because there is not a number n which added to its sum of digits gives 447273440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1397570 + ... + 1397889.

It is an arithmetic number, because the mean of its divisors is an integer number (44028495).

Almost surely, 2^447273440 is an apocalyptic number.

447273440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

447273440 is an abundant number, since it is smaller than the sum of its proper divisors (609410440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

447273440 is a wasteful number, since it uses less digits than its factorization.

447273440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2795474 (or 2795466 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 35.

The square root of 447273440 is about 21148.8401573230. The cubic root of 447273440 is about 764.7586006955.

The spelling of 447273440 in words is "four hundred forty-seven million, two hundred seventy-three thousand, four hundred forty".