40947471 has 16 divisors (see below), whose sum is σ = 61204320. Its totient is φ = 27054720.

The previous prime is 40947463. The next prime is 40947499. The reversal of 40947471 is 17474904.

It is not a de Polignac number, because 40947471 - 2³ = 40947463 is a prime.

It is a super-3 number, since 3×40947471³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40947421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3660 + ... + 9761.

It is an arithmetic number, because the mean of its divisors is an integer number (3825270).

Almost surely, 2^40947471 is an apocalyptic number.

40947471 is a deficient number, since it is larger than the sum of its proper divisors (20256849).

40947471 is a wasteful number, since it uses less digits than its factorization.

40947471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13543 (or 13537 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 40947471 is about 6399.0210970116. The cubic root of 40947471 is about 344.6743997997.

The spelling of 40947471 in words is "forty million, nine hundred forty-seven thousand, four hundred seventy-one".