40432471 has 4 divisors (see below), whose sum is σ = 40492872. Its totient is φ = 40372072.

The previous prime is 40432397. The next prime is 40432489. The reversal of 40432471 is 17423404.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40432471 is a prime.

It is a super-3 number, since 3×40432471³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40439471) 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, 29185 + ... + 30538.

It is an arithmetic number, because the mean of its divisors is an integer number (10123218).

Almost surely, 2^40432471 is an apocalyptic number.

40432471 is a deficient number, since it is larger than the sum of its proper divisors (60401).

40432471 is an equidigital number, since it uses as much as digits as its factorization.

40432471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60400.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 40432471 is about 6358.6532379113. The cubic root of 40432471 is about 343.2232989102.

Adding to 40432471 its reverse (17423404), we get a palindrome (57855875).

The spelling of 40432471 in words is "forty million, four hundred thirty-two thousand, four hundred seventy-one".