40481990 has 8 divisors (see below), whose sum is σ = 72867600. Its totient is φ = 16192792.

The previous prime is 40481977. The next prime is 40482007. The reversal of 40481990 is 9918404.

40481990 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 self number, because there is not a number n which added to its sum of digits gives 40481990.

It is a congruent number.

It is an unprimeable number.

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, 2024090 + ... + 2024109.

It is an arithmetic number, because the mean of its divisors is an integer number (9108450).

Almost surely, 2^40481990 is an apocalyptic number.

40481990 is a deficient number, since it is larger than the sum of its proper divisors (32385610).

40481990 is a wasteful number, since it uses less digits than its factorization.

40481990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4048206.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 40481990 is about 6362.5458740979. The cubic root of 40481990 is about 343.3633607654.

The spelling of 40481990 in words is "forty million, four hundred eighty-one thousand, nine hundred ninety".