40309355 has 32 divisors (see below), whose sum is σ = 53222400. Its totient is φ = 29203200.

The previous prime is 40309351. The next prime is 40309421. The reversal of 40309355 is 55390304.

40309355 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 40309355 - 2² = 40309351 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40309351) 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 31 ways as a sum of consecutive naturals, for example, 307640 + ... + 307770.

It is an arithmetic number, because the mean of its divisors is an integer number (1663200).

Almost surely, 2^40309355 is an apocalyptic number.

40309355 is a deficient number, since it is larger than the sum of its proper divisors (12913045).

40309355 is a wasteful number, since it uses less digits than its factorization.

40309355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275.

The product of its (nonzero) digits is 8100, while the sum is 29.

The square root of 40309355 is about 6348.9648762613. The cubic root of 40309355 is about 342.8745755438.

Adding to 40309355 its reverse (55390304), we get a palindrome (95699659).

The spelling of 40309355 in words is "forty million, three hundred nine thousand, three hundred fifty-five".