447045921 has 12 divisors (see below), whose sum is σ = 737980672. Its totient is φ = 255454776.

The previous prime is 447045899. The next prime is 447045943. The reversal of 447045921 is 129540744.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (447045899) and next prime (447045943).

It is not a de Polignac number, because 447045921 - 2⁶ = 447045857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (447045961) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3547921 + ... + 3548046.

Almost surely, 2^447045921 is an apocalyptic number.

It is an amenable number.

447045921 is a deficient number, since it is larger than the sum of its proper divisors (290934751).

447045921 is a wasteful number, since it uses less digits than its factorization.

447045921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7095980 (or 7095977 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 447045921 is about 21143.4604783607. The cubic root of 447045921 is about 764.6289062642.

It can be divided in two parts, 44704 and 5921, that added together give a 4-th power (50625 = 15⁴).

The spelling of 447045921 in words is "four hundred forty-seven million, forty-five thousand, nine hundred twenty-one".