40079894 has 8 divisors (see below), whose sum is σ = 60170088. Its totient is φ = 20023200.

The previous prime is 40079891. The next prime is 40079899. The reversal of 40079894 is 49897004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40079891) 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 in 3 ways as a sum of consecutive naturals, for example, 5132 + ... + 10319.

It is an arithmetic number, because the mean of its divisors is an integer number (7521261).

Almost surely, 2^40079894 is an apocalyptic number.

40079894 is a deficient number, since it is larger than the sum of its proper divisors (20090194).

40079894 is a wasteful number, since it uses less digits than its factorization.

40079894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16750.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 40079894 is about 6330.8683448639. The cubic root of 40079894 is about 342.2227326051. Note that the first 3 decimals are identical.

The spelling of 40079894 in words is "forty million, seventy-nine thousand, eight hundred ninety-four".