4394334400040 has 32 divisors (see below), whose sum is σ = 10647810278280. Its totient is φ = 1622523470592.

The previous prime is 4394334400037. The next prime is 4394334400061. The reversal of 4394334400040 is 400044334934.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2927924809924 + 1466409590116 = 1711118^2 + 1210954^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4394334399967 and 4394334400003.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4225321019 + ... + 4225322058.

Almost surely, 2^{4394334400040} is an apocalyptic number.

4394334400040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4394334400040 is an abundant number, since it is smaller than the sum of its proper divisors (6253475878240).

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

4394334400040 is a wasteful number, since it uses less digits than its factorization.

4394334400040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8450643101 (or 8450643097 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 38.

Adding to 4394334400040 its reverse (400044334934), we get a palindrome (4794378734974).

The spelling of 4394334400040 in words is "four trillion, three hundred ninety-four billion, three hundred thirty-four million, four hundred thousand, forty".