40187694 has 16 divisors (see below), whose sum is σ = 85103568. Its totient is φ = 12607872.

The previous prime is 40187689. The next prime is 40187701. The reversal of 40187694 is 49678104.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196897 + ... + 197100.

It is an arithmetic number, because the mean of its divisors is an integer number (5318973).

Almost surely, 2^40187694 is an apocalyptic number.

40187694 is an abundant number, since it is smaller than the sum of its proper divisors (44915874).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40187694 is a wasteful number, since it uses less digits than its factorization.

40187694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394019.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 40187694 is about 6339.3764677608. The cubic root of 40187694 is about 342.5292752073.

The spelling of 40187694 in words is "forty million, one hundred eighty-seven thousand, six hundred ninety-four".