40331994 has 8 divisors (see below), whose sum is σ = 80664000. Its totient is φ = 13443996.

The previous prime is 40331983. The next prime is 40331999. The reversal of 40331994 is 49913304.

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

40331994 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (40331999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3360994 + ... + 3361005.

It is an arithmetic number, because the mean of its divisors is an integer number (10083000).

Almost surely, 2^40331994 is an apocalyptic number.

40331994 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

40331994 is a wasteful number, since it uses less digits than its factorization.

40331994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6722004.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 40331994 is about 6350.7475150568. The cubic root of 40331994 is about 342.9387532414.

The spelling of 40331994 in words is "forty million, three hundred thirty-one thousand, nine hundred ninety-four".