40040009998 has 8 divisors (see below), whose sum is σ = 60062258160. Its totient is φ = 20019257280.

The previous prime is 40040009957. The next prime is 40040010041. The reversal of 40040009998 is 89990004004.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 304338 + ... + 415573.

It is an arithmetic number, because the mean of its divisors is an integer number (7507782270).

Almost surely, 2^40040009998 is an apocalyptic number.

40040009998 is a deficient number, since it is larger than the sum of its proper divisors (20022248162).

40040009998 is a wasteful number, since it uses less digits than its factorization.

40040009998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747722.

The product of its (nonzero) digits is 93312, while the sum is 43.

The spelling of 40040009998 in words is "forty billion, forty million, nine thousand, nine hundred ninety-eight".