40635998 has 16 divisors (see below), whose sum is σ = 66570336. Its totient is φ = 18490080.

The previous prime is 40635997. The next prime is 40636007. The reversal of 40635998 is 89953604.

40635998 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40635997) 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 7 ways as a sum of consecutive naturals, for example, 9161 + ... + 12852.

It is an arithmetic number, because the mean of its divisors is an integer number (4160646).

Almost surely, 2^40635998 is an apocalyptic number.

40635998 is a deficient number, since it is larger than the sum of its proper divisors (25934338).

40635998 is a wasteful number, since it uses less digits than its factorization.

40635998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22099.

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 40635998 is about 6374.6370877094. The cubic root of 40635998 is about 343.7982355232.

The spelling of 40635998 in words is "forty million, six hundred thirty-five thousand, nine hundred ninety-eight".