454693821 has 8 divisors (see below), whose sum is σ = 610684224. Its totient is φ = 300916320.

The previous prime is 454693801. The next prime is 454693843. The reversal of 454693821 is 128396454.

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

It is not a de Polignac number, because 454693821 - 2¹⁴ = 454677437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (454693801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 552745 + ... + 553566.

It is an arithmetic number, because the mean of its divisors is an integer number (76335528).

Almost surely, 2^454693821 is an apocalyptic number.

It is an amenable number.

454693821 is a deficient number, since it is larger than the sum of its proper divisors (155990403).

454693821 is a wasteful number, since it uses less digits than its factorization.

454693821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1106451.

The product of its digits is 207360, while the sum is 42.

The square root of 454693821 is about 21323.5508534578. The cubic root of 454693821 is about 768.9646065658.

The spelling of 454693821 in words is "four hundred fifty-four million, six hundred ninety-three thousand, eight hundred twenty-one".