40402244440 has 32 divisors (see below), whose sum is σ = 93019124880. Its totient is φ = 15785062272.

The previous prime is 40402244401. The next prime is 40402244453. The reversal of 40402244440 is 4444220404.

It is a junction number, because it is equal to n+sod(n) for n = 40402244399 and 40402244408.

It is a congruent number.

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, 11743119 + ... + 11746558.

Almost surely, 2^40402244440 is an apocalyptic number.

40402244440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40402244440 is an abundant number, since it is smaller than the sum of its proper divisors (52616880440).

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

40402244440 is a wasteful number, since it uses less digits than its factorization.

40402244440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23489731 (or 23489727 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 40402244440 its reverse (4444220404), we get a palindrome (44846464844).

The spelling of 40402244440 in words is "forty billion, four hundred two million, two hundred forty-four thousand, four hundred forty".