40749890 has 16 divisors (see below), whose sum is σ = 74063808. Its totient is φ = 16141296.

The previous prime is 40749871. The next prime is 40749899. The reversal of 40749890 is 9894704.

40749890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (40749899) 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 7 ways as a sum of consecutive naturals, for example, 18752 + ... + 20811.

It is an arithmetic number, because the mean of its divisors is an integer number (4628988).

Almost surely, 2^40749890 is an apocalyptic number.

40749890 is a deficient number, since it is larger than the sum of its proper divisors (33313918).

40749890 is a wasteful number, since it uses less digits than its factorization.

40749890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39673.

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

The square root of 40749890 is about 6383.5640515311. The cubic root of 40749890 is about 344.1191278865.

The spelling of 40749890 in words is "forty million, seven hundred forty-nine thousand, eight hundred ninety".