40418471 has 4 divisors (see below), whose sum is σ = 40556712. Its totient is φ = 40280232.

The previous prime is 40418461. The next prime is 40418479. The reversal of 40418471 is 17481404.

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 40418471 - 2⁶ = 40418407 is a prime.

It is a super-3 number, since 3×40418471³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40418479) 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, 68681 + ... + 69266.

It is an arithmetic number, because the mean of its divisors is an integer number (10139178).

Almost surely, 2^40418471 is an apocalyptic number.

40418471 is a deficient number, since it is larger than the sum of its proper divisors (138241).

40418471 is a wasteful number, since it uses less digits than its factorization.

40418471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138240.

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 40418471 is about 6357.5522805558. The cubic root of 40418471 is about 343.1836799210.

Adding to 40418471 its reverse (17481404), we get a palindrome (57899875).

The spelling of 40418471 in words is "forty million, four hundred eighteen thousand, four hundred seventy-one".