423440811 has 32 divisors (see below), whose sum is σ = 685670400. Its totient is φ = 257109120.

The previous prime is 423440791. The next prime is 423440827. The reversal of 423440811 is 118044324.

It is not a de Polignac number, because 423440811 - 2⁵ = 423440779 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (423440881) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 651 + ... + 29108.

It is an arithmetic number, because the mean of its divisors is an integer number (21427200).

Almost surely, 2^423440811 is an apocalyptic number.

423440811 is a deficient number, since it is larger than the sum of its proper divisors (262229589).

423440811 is a wasteful number, since it uses less digits than its factorization.

423440811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29816 (or 29810 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 423440811 is about 20577.6774928562. The cubic root of 423440811 is about 750.9267423931.

The spelling of 423440811 in words is "four hundred twenty-three million, four hundred forty thousand, eight hundred eleven".