40691198 has 12 divisors (see below), whose sum is σ = 64419480. Its totient is φ = 19274436.

The previous prime is 40691159. The next prime is 40691207. The reversal of 40691198 is 89119604.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27458 + ... + 28901.

It is an arithmetic number, because the mean of its divisors is an integer number (5368290).

Almost surely, 2^40691198 is an apocalyptic number.

40691198 is a deficient number, since it is larger than the sum of its proper divisors (23728282).

40691198 is a wasteful number, since it uses less digits than its factorization.

40691198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56399 (or 56380 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 40691198 is about 6378.9652765946. The cubic root of 40691198 is about 343.9538370991.

The spelling of 40691198 in words is "forty million, six hundred ninety-one thousand, one hundred ninety-eight".