423853961 has 4 divisors (see below), whose sum is σ = 427969152. Its totient is φ = 419738772.

The previous prime is 423853949. The next prime is 423853973. The reversal of 423853961 is 169358324.

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 an interprime number because it is at equal distance from previous prime (423853949) and next prime (423853973).

It is a cyclic number.

It is not a de Polignac number, because 423853961 - 2⁶ = 423853897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423853901) 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, 2057441 + ... + 2057646.

It is an arithmetic number, because the mean of its divisors is an integer number (106992288).

Almost surely, 2^423853961 is an apocalyptic number.

It is an amenable number.

423853961 is a deficient number, since it is larger than the sum of its proper divisors (4115191).

423853961 is a wasteful number, since it uses less digits than its factorization.

423853961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4115190.

The product of its digits is 155520, while the sum is 41.

The square root of 423853961 is about 20587.7138361694. The cubic root of 423853961 is about 751.1708887045.

The spelling of 423853961 in words is "four hundred twenty-three million, eight hundred fifty-three thousand, nine hundred sixty-one".