457446921 has 8 divisors (see below), whose sum is σ = 610139040. Its totient is φ = 304859712.

The previous prime is 457446919. The next prime is 457446929. The reversal of 457446921 is 129644754.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 457446921 - 2¹ = 457446919 is a prime.

It is not an unprimeable number, because it can be changed into a prime (457446929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15415 + ... + 33948.

It is an arithmetic number, because the mean of its divisors is an integer number (76267380).

Almost surely, 2^457446921 is an apocalyptic number.

It is an amenable number.

457446921 is a deficient number, since it is larger than the sum of its proper divisors (152692119).

457446921 is a wasteful number, since it uses less digits than its factorization.

457446921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52455.

The product of its digits is 241920, while the sum is 42.

The square root of 457446921 is about 21388.0088133515. The cubic root of 457446921 is about 770.5134715388.

The spelling of 457446921 in words is "four hundred fifty-seven million, four hundred forty-six thousand, nine hundred twenty-one".