40117899 has 8 divisors (see below), whose sum is σ = 53645200. Its totient is φ = 26667936.

The previous prime is 40117867. The next prime is 40117919. The reversal of 40117899 is 99871104.

It is a happy number.

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

It is not a de Polignac number, because 40117899 - 2⁵ = 40117867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40117829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18112 + ... + 20205.

It is an arithmetic number, because the mean of its divisors is an integer number (6705650).

Almost surely, 2^40117899 is an apocalyptic number.

40117899 is a deficient number, since it is larger than the sum of its proper divisors (13527301).

40117899 is a wasteful number, since it uses less digits than its factorization.

40117899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38669.

The product of its (nonzero) digits is 18144, while the sum is 39.

The square root of 40117899 is about 6333.8691966286. The cubic root of 40117899 is about 342.3308671739.

The spelling of 40117899 in words is "forty million, one hundred seventeen thousand, eight hundred ninety-nine".