40309870 has 16 divisors (see below), whose sum is σ = 73553040. Its totient is φ = 15902784.

The previous prime is 40309853. The next prime is 40309883. The reversal of 40309870 is 7890304.

It is a happy number.

40309870 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 7 ways as a sum of consecutive naturals, for example, 26880 + ... + 28339.

It is an arithmetic number, because the mean of its divisors is an integer number (4597065).

Almost surely, 2^40309870 is an apocalyptic number.

40309870 is a deficient number, since it is larger than the sum of its proper divisors (33243170).

40309870 is a wasteful number, since it uses less digits than its factorization.

40309870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55299.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 40309870 is about 6349.0054339243. The cubic root of 40309870 is about 342.8760357479.

The spelling of 40309870 in words is "forty million, three hundred nine thousand, eight hundred seventy".