40291471 has 4 divisors (see below), whose sum is σ = 43954344. Its totient is φ = 36628600.

The previous prime is 40291451. The next prime is 40291477. The reversal of 40291471 is 17419204.

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 40291471 - 2⁹ = 40290959 is a prime.

It is a super-3 number, since 3×40291471³ (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 (40291477) 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, 1831420 + ... + 1831441.

It is an arithmetic number, because the mean of its divisors is an integer number (10988586).

Almost surely, 2^40291471 is an apocalyptic number.

40291471 is a deficient number, since it is larger than the sum of its proper divisors (3662873).

40291471 is a wasteful number, since it uses less digits than its factorization.

40291471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3662872.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 40291471 is about 6347.5563014439. The cubic root of 40291471 is about 342.8238604680.

The spelling of 40291471 in words is "forty million, two hundred ninety-one thousand, four hundred seventy-one".