423481334440 has 16 divisors (see below), whose sum is σ = 952833002580. Its totient is φ = 169392533760.

The previous prime is 423481334389. The next prime is 423481334509. The reversal of 423481334440 is 44433184324.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 393999757636 + 29481576804 = 627694^2 + 171702^2 .

It is a super-2 number, since 2×423481334440² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 10587033361 = 423481334440 / (4 + 2 + 3 + 4 + 8 + 1 + 3 + 3 + 4 + 4 + 4 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 423481334393 and 423481334402.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5293516641 + ... + 5293516720.

Almost surely, 2^423481334440 is an apocalyptic number.

423481334440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

423481334440 is an abundant number, since it is smaller than the sum of its proper divisors (529351668140).

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

423481334440 is a wasteful number, since it uses less digits than its factorization.

423481334440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10587033372 (or 10587033368 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 40.

The spelling of 423481334440 in words is "four hundred twenty-three billion, four hundred eighty-one million, three hundred thirty-four thousand, four hundred forty".