40309911 has 6 divisors (see below), whose sum is σ = 58225440. Its totient is φ = 26873268.

The previous prime is 40309897. The next prime is 40309931. The reversal of 40309911 is 11990304.

40309911 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40309911 - 2⁷ = 40309783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40309931) 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 5 ways as a sum of consecutive naturals, for example, 2239431 + ... + 2239448.

It is an arithmetic number, because the mean of its divisors is an integer number (9704240).

Almost surely, 2^40309911 is an apocalyptic number.

40309911 is a deficient number, since it is larger than the sum of its proper divisors (17915529).

40309911 is a wasteful number, since it uses less digits than its factorization.

40309911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4478885 (or 4478882 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 40309911 is about 6349.0086627756. The cubic root of 40309911 is about 342.8761519966.

The spelling of 40309911 in words is "forty million, three hundred nine thousand, nine hundred eleven".