40147471 has 12 divisors (see below), whose sum is σ = 49685232. Its totient is φ = 31764096.

The previous prime is 40147463. The next prime is 40147477. The reversal of 40147471 is 17474104.

It is not a de Polignac number, because 40147471 - 2³ = 40147463 is a prime.

It is a super-3 number, since 3×40147471³ (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 (40147477) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15786 + ... + 18151.

It is an arithmetic number, because the mean of its divisors is an integer number (4140436).

Almost surely, 2^40147471 is an apocalyptic number.

40147471 is a deficient number, since it is larger than the sum of its proper divisors (9537761).

40147471 is a wasteful number, since it uses less digits than its factorization.

40147471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33970 (or 33957 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 40147471 is about 6336.2032006557. The cubic root of 40147471 is about 342.4149603282.

The spelling of 40147471 in words is "forty million, one hundred forty-seven thousand, four hundred seventy-one".