40949990 has 8 divisors (see below), whose sum is σ = 73710000. Its totient is φ = 16379992.

The previous prime is 40949989. The next prime is 40949999. The reversal of 40949990 is 9994904.

It is a happy number.

40949990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40949999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2047490 + ... + 2047509.

It is an arithmetic number, because the mean of its divisors is an integer number (9213750).

Almost surely, 2^40949990 is an apocalyptic number.

40949990 is a deficient number, since it is larger than the sum of its proper divisors (32760010).

40949990 is a wasteful number, since it uses less digits than its factorization.

40949990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4095006.

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 40949990 is about 6399.2179209650. The cubic root of 40949990 is about 344.6814675297.

The spelling of 40949990 in words is "forty million, nine hundred forty-nine thousand, nine hundred ninety".