40328913 has 16 divisors (see below), whose sum is σ = 59412096. Its totient is φ = 24203520.

The previous prime is 40328891. The next prime is 40328917. The reversal of 40328913 is 31982304.

It is not a de Polignac number, because 40328913 - 2⁹ = 40328401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40328917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16018 + ... + 18363.

It is an arithmetic number, because the mean of its divisors is an integer number (3713256).

Almost surely, 2^40328913 is an apocalyptic number.

It is an amenable number.

40328913 is a deficient number, since it is larger than the sum of its proper divisors (19083183).

40328913 is a wasteful number, since it uses less digits than its factorization.

40328913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34424.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 40328913 is about 6350.5049405539. The cubic root of 40328913 is about 342.9300205447.

The spelling of 40328913 in words is "forty million, three hundred twenty-eight thousand, nine hundred thirteen".