40694 has 4 divisors (see below), whose sum is σ = 61044. Its totient is φ = 20346.

The previous prime is 40693. The next prime is 40697. The reversal of 40694 is 49604.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10172 + ... + 10175.

It is an arithmetic number, because the mean of its divisors is an integer number (15261).

2⁴⁰⁶⁹⁴ is an apocalyptic number.

40694 is a deficient number, since it is larger than the sum of its proper divisors (20350).

40694 is a wasteful number, since it uses less digits than its factorization.

40694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20349.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 40694 is about 201.7275390223. The cubic root of 40694 is about 34.3961731817.

The spelling of 40694 in words is "forty thousand, six hundred ninety-four".