40865471 has 4 divisors (see below), whose sum is σ = 42183744. Its totient is φ = 39547200.

The previous prime is 40865459. The next prime is 40865477. The reversal of 40865471 is 17456804.

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 40865471 - 2¹⁴ = 40849087 is a prime.

It is a super-3 number, since 3×40865471³ (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 (40865477) 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, 659090 + ... + 659151.

It is an arithmetic number, because the mean of its divisors is an integer number (10545936).

Almost surely, 2^40865471 is an apocalyptic number.

40865471 is a deficient number, since it is larger than the sum of its proper divisors (1318273).

40865471 is a wasteful number, since it uses less digits than its factorization.

40865471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1318272.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 40865471 is about 6392.6106560622. The cubic root of 40865471 is about 344.4441683391. Note that the first 3 decimals are identical.

The spelling of 40865471 in words is "forty million, eight hundred sixty-five thousand, four hundred seventy-one".