40444135928906 has 8 divisors (see below), whose sum is σ = 60739383876420. Its totient is φ = 20197674636768.

The previous prime is 40444135928839. The next prime is 40444135928929. The reversal of 40444135928906 is 60982953144404.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 40416344038225 + 27791890681 = 6357385^2 + 166709^2 .

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

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, 12196661771 + ... + 12196665086.

Almost surely, 2^{40444135928906} is an apocalyptic number.

40444135928906 is a deficient number, since it is larger than the sum of its proper divisors (20295247947514).

40444135928906 is a wasteful number, since it uses less digits than its factorization.

40444135928906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24393327688.

The product of its (nonzero) digits is 29859840, while the sum is 59.

The spelling of 40444135928906 in words is "forty trillion, four hundred forty-four billion, one hundred thirty-five million, nine hundred twenty-eight thousand, nine hundred six".