423771653 has 4 divisors (see below), whose sum is σ = 423812928. Its totient is φ = 423730380.

The previous prime is 423771629. The next prime is 423771661. The reversal of 423771653 is 356177324.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 423771653 - 2⁶ = 423771589 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 (423771683) 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, 8138 + ... + 30228.

It is an arithmetic number, because the mean of its divisors is an integer number (105953232).

Almost surely, 2^423771653 is an apocalyptic number.

It is an amenable number.

423771653 is a deficient number, since it is larger than the sum of its proper divisors (41275).

423771653 is a wasteful number, since it uses less digits than its factorization.

423771653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41274.

The product of its digits is 105840, while the sum is 38.

The square root of 423771653 is about 20585.7147799147. The cubic root of 423771653 is about 751.1222623838.

It can be divided in two parts, 423771 and 653, that added together give a palindrome (424424).

The spelling of 423771653 in words is "four hundred twenty-three million, seven hundred seventy-one thousand, six hundred fifty-three".