423400440044 has 48 divisors (see below), whose sum is σ = 766328744160. Its totient is φ = 204577850880.

The previous prime is 423400440031. The next prime is 423400440077. The reversal of 423400440044 is 440044004324.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 423400439989 and 423400440016.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11418254 + ... + 11455274.

It is an arithmetic number, because the mean of its divisors is an integer number (15965182170).

Almost surely, 2^423400440044 is an apocalyptic number.

It is an amenable number.

423400440044 is a deficient number, since it is larger than the sum of its proper divisors (342928304116).

423400440044 is a wasteful number, since it uses less digits than its factorization.

423400440044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37890 (or 37888 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 29.

Adding to 423400440044 its reverse (440044004324), we get a palindrome (863444444368).

The spelling of 423400440044 in words is "four hundred twenty-three billion, four hundred million, four hundred forty thousand, forty-four".