423945439801 has 8 divisors (see below), whose sum is σ = 472299959880. Its totient is φ = 377839967232.

The previous prime is 423945439787. The next prime is 423945439831. The reversal of 423945439801 is 108934549324.

It can be written as a sum of positive squares in 4 ways, for example, as 5467123600 + 418478316201 = 73940^2 + 646899^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 423945439801 - 2⁵ = 423945439769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423945439831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 562261480 + ... + 562262233.

It is an arithmetic number, because the mean of its divisors is an integer number (59037494985).

Almost surely, 2^423945439801 is an apocalyptic number.

It is an amenable number.

423945439801 is a deficient number, since it is larger than the sum of its proper divisors (48354520079).

423945439801 is a wasteful number, since it uses less digits than its factorization.

423945439801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1124523755.

The product of its (nonzero) digits is 3732480, while the sum is 52.

The spelling of 423945439801 in words is "four hundred twenty-three billion, nine hundred forty-five million, four hundred thirty-nine thousand, eight hundred one".