447561406 has 4 divisors (see below), whose sum is σ = 671342112. Its totient is φ = 223780702.

The previous prime is 447561383. The next prime is 447561409. The reversal of 447561406 is 604165744.

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

It is a super-2 number, since 2×447561406² = 400622424281393672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (447561409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111890350 + ... + 111890353.

It is an arithmetic number, because the mean of its divisors is an integer number (167835528).

Almost surely, 2^447561406 is an apocalyptic number.

447561406 is a deficient number, since it is larger than the sum of its proper divisors (223780706).

447561406 is a wasteful number, since it uses less digits than its factorization.

447561406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223780705.

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 447561406 is about 21155.6471420753. The cubic root of 447561406 is about 764.9226891556.

The spelling of 447561406 in words is "four hundred forty-seven million, five hundred sixty-one thousand, four hundred six".