40287471 has 8 divisors (see below), whose sum is σ = 61390464. Its totient is φ = 23021400.

The previous prime is 40287451. The next prime is 40287479. The reversal of 40287471 is 17478204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40287471 - 2⁹ = 40286959 is a prime.

It is a super-3 number, since 3×40287471³ (a number of 24 digits) contains 333 as substring.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40287479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 959205 + ... + 959246.

It is an arithmetic number, because the mean of its divisors is an integer number (7673808).

Almost surely, 2^40287471 is an apocalyptic number.

40287471 is a deficient number, since it is larger than the sum of its proper divisors (21102993).

40287471 is a wasteful number, since it uses less digits than its factorization.

40287471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1918461.

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 40287471 is about 6347.2412117392. The cubic root of 40287471 is about 342.8125152975.

The spelling of 40287471 in words is "forty million, two hundred eighty-seven thousand, four hundred seventy-one".