40749830 has 32 divisors (see below), whose sum is σ = 81343008. Its totient is φ = 14572800.

The previous prime is 40749823. The next prime is 40749857. The reversal of 40749830 is 3894704.

40749830 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 15 ways as a sum of consecutive naturals, for example, 3674 + ... + 9746.

It is an arithmetic number, because the mean of its divisors is an integer number (2541969).

Almost surely, 2^40749830 is an apocalyptic number.

40749830 is a deficient number, since it is larger than the sum of its proper divisors (40593178).

40749830 is a wasteful number, since it uses less digits than its factorization.

40749830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6152.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 40749830 is about 6383.5593519603. The cubic root of 40749830 is about 344.1189589931.

The spelling of 40749830 in words is "forty million, seven hundred forty-nine thousand, eight hundred thirty".