446428864421 has 4 divisors (see below), whose sum is σ = 465838815072. Its totient is φ = 427018913772.

The previous prime is 446428864373. The next prime is 446428864433. The reversal of 446428864421 is 124468824644.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 446428864421 - 2²² = 446424670117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (446428864451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9704975291 + ... + 9704975336.

It is an arithmetic number, because the mean of its divisors is an integer number (116459703768).

Almost surely, 2^446428864421 is an apocalyptic number.

It is an amenable number.

446428864421 is a deficient number, since it is larger than the sum of its proper divisors (19409950651).

446428864421 is a wasteful number, since it uses less digits than its factorization.

446428864421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19409950650.

The product of its digits is 9437184, while the sum is 53.

The spelling of 446428864421 in words is "four hundred forty-six billion, four hundred twenty-eight million, eight hundred sixty-four thousand, four hundred twenty-one".