423478953 has 6 divisors (see below), whose sum is σ = 611691834. Its totient is φ = 282319296.

The previous prime is 423478943. The next prime is 423478981. The reversal of 423478953 is 359874324.

It can be written as a sum of positive squares in only one way, i.e., 362217024 + 61261929 = 19032^2 + 7827^2 .

It is not a de Polignac number, because 423478953 - 2⁶ = 423478889 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 423478899 and 423478908.

It is not an unprimeable number, because it can be changed into a prime (423478903) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23526600 + ... + 23526617.

It is an arithmetic number, because the mean of its divisors is an integer number (101948639).

Almost surely, 2^423478953 is an apocalyptic number.

It is an amenable number.

423478953 is a deficient number, since it is larger than the sum of its proper divisors (188212881).

423478953 is a wasteful number, since it uses less digits than its factorization.

423478953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47053223 (or 47053220 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The square root of 423478953 is about 20578.6042529614. The cubic root of 423478953 is about 750.9492886279.

The spelling of 423478953 in words is "four hundred twenty-three million, four hundred seventy-eight thousand, nine hundred fifty-three".