421344653 has 8 divisors (see below), whose sum is σ = 436561920. Its totient is φ = 406229040.

The previous prime is 421344617. The next prime is 421344667. The reversal of 421344653 is 356443124.

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

It is a cyclic number.

It is not a de Polignac number, because 421344653 - 2²⁶ = 354235789 is a prime.

It is a super-2 number, since 2×421344653² = 355062633223380818, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421344853) 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, 16925 + ... + 33602.

It is an arithmetic number, because the mean of its divisors is an integer number (54570240).

Almost surely, 2^421344653 is an apocalyptic number.

It is an amenable number.

421344653 is a deficient number, since it is larger than the sum of its proper divisors (15217267).

421344653 is a wasteful number, since it uses less digits than its factorization.

421344653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50827.

The product of its digits is 34560, while the sum is 32.

The square root of 421344653 is about 20526.6814901971. The cubic root of 421344653 is about 749.6855885086.

Adding to 421344653 its reverse (356443124), we get a palindrome (777787777).

The spelling of 421344653 in words is "four hundred twenty-one million, three hundred forty-four thousand, six hundred fifty-three".