40938511 has 4 divisors (see below), whose sum is σ = 41456800. Its totient is φ = 40420224.

The previous prime is 40938493. The next prime is 40938523. The reversal of 40938511 is 11583904.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40938511 - 2²¹ = 38841359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40938571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 259026 + ... + 259183.

It is an arithmetic number, because the mean of its divisors is an integer number (10364200).

Almost surely, 2^40938511 is an apocalyptic number.

40938511 is a deficient number, since it is larger than the sum of its proper divisors (518289).

40938511 is an equidigital number, since it uses as much as digits as its factorization.

40938511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518288.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 40938511 is about 6398.3209516247. The cubic root of 40938511 is about 344.6492577675.

The spelling of 40938511 in words is "forty million, nine hundred thirty-eight thousand, five hundred eleven".