423403980 has 96 divisors (see below), whose sum is σ = 1257500160. Its totient is φ = 106145280.

The previous prime is 423403969. The next prime is 423403991. The reversal of 423403980 is 89304324.

It is an interprime number because it is at equal distance from previous prime (423403969) and next prime (423403991).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 154825 + ... + 157535.

It is an arithmetic number, because the mean of its divisors is an integer number (13098960).

Almost surely, 2^423403980 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423403980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (628750080).

423403980 is an abundant number, since it is smaller than the sum of its proper divisors (834096180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

423403980 is a wasteful number, since it uses less digits than its factorization.

423403980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2879 (or 2877 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 423403980 is about 20576.7825473275. The cubic root of 423403980 is about 750.9049698225.

The spelling of 423403980 in words is "four hundred twenty-three million, four hundred three thousand, nine hundred eighty".