40396198 has 4 divisors (see below), whose sum is σ = 60594300. Its totient is φ = 20198098.

The previous prime is 40396177. The next prime is 40396219. The reversal of 40396198 is 89169304.

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

It is an interprime number because it is at equal distance from previous prime (40396177) and next prime (40396219).

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 40396198.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10099048 + ... + 10099051.

It is an arithmetic number, because the mean of its divisors is an integer number (15148575).

Almost surely, 2^40396198 is an apocalyptic number.

40396198 is a deficient number, since it is larger than the sum of its proper divisors (20198102).

40396198 is a wasteful number, since it uses less digits than its factorization.

40396198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20198101.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 40396198 is about 6355.8003429938. The cubic root of 40396198 is about 343.1206300794.

The spelling of 40396198 in words is "forty million, three hundred ninety-six thousand, one hundred ninety-eight".