40391919354 has 8 divisors (see below), whose sum is σ = 80783838720. Its totient is φ = 13463973116.

The previous prime is 40391919349. The next prime is 40391919413. The reversal of 40391919354 is 45391919304.

It is a happy number.

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

40391919354 is an admirable number.

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, 3365993274 + ... + 3365993285.

It is an arithmetic number, because the mean of its divisors is an integer number (10097979840).

Almost surely, 2^40391919354 is an apocalyptic number.

40391919354 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

40391919354 is a wasteful number, since it uses less digits than its factorization.

40391919354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6731986564.

The product of its (nonzero) digits is 524880, while the sum is 48.

The spelling of 40391919354 in words is "forty billion, three hundred ninety-one million, nine hundred nineteen thousand, three hundred fifty-four".