40198799 has 4 divisors (see below), whose sum is σ = 40431336. Its totient is φ = 39966264.

The previous prime is 40198793. The next prime is 40198831. The reversal of 40198799 is 99789104.

40198799 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40198799 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 (40198793) by changing a digit.

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, 116009 + ... + 116354.

It is an arithmetic number, because the mean of its divisors is an integer number (10107834).

Almost surely, 2^40198799 is an apocalyptic number.

40198799 is a deficient number, since it is larger than the sum of its proper divisors (232537).

40198799 is a wasteful number, since it uses less digits than its factorization.

40198799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232536.

The product of its (nonzero) digits is 163296, while the sum is 47.

The square root of 40198799 is about 6340.2522820468. The cubic root of 40198799 is about 342.5608224872.

The spelling of 40198799 in words is "forty million, one hundred ninety-eight thousand, seven hundred ninety-nine".