464224821 has 4 divisors (see below), whose sum is σ = 618966432. Its totient is φ = 309483212.

The previous prime is 464224819. The next prime is 464224877. The reversal of 464224821 is 128422464.

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 464224821 - 2¹ = 464224819 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (464220821) 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, 77370801 + ... + 77370806.

It is an arithmetic number, because the mean of its divisors is an integer number (154741608).

Almost surely, 2^464224821 is an apocalyptic number.

It is an amenable number.

464224821 is a deficient number, since it is larger than the sum of its proper divisors (154741611).

464224821 is a wasteful number, since it uses less digits than its factorization.

464224821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154741610.

The product of its digits is 24576, while the sum is 33.

The square root of 464224821 is about 21545.8771230136. The cubic root of 464224821 is about 774.3003444820.

The spelling of 464224821 in words is "four hundred sixty-four million, two hundred twenty-four thousand, eight hundred twenty-one".