40454644999 has 4 divisors (see below), whose sum is σ = 40460607136. Its totient is φ = 40448682864.

The previous prime is 40454644981. The next prime is 40454645041. The reversal of 40454644999 is 99944645404.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40454644999 - 2⁷ = 40454644871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40454645999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2970879 + ... + 2984464.

It is an arithmetic number, because the mean of its divisors is an integer number (10115151784).

Almost surely, 2^40454644999 is an apocalyptic number.

40454644999 is a deficient number, since it is larger than the sum of its proper divisors (5962137).

40454644999 is an equidigital number, since it uses as much as digits as its factorization.

40454644999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5962136.

The product of its (nonzero) digits is 22394880, while the sum is 58.

The spelling of 40454644999 in words is "forty billion, four hundred fifty-four million, six hundred forty-four thousand, nine hundred ninety-nine".