40471817 has 4 divisors (see below), whose sum is σ = 41157840. Its totient is φ = 39785796.

The previous prime is 40471813. The next prime is 40471831. The reversal of 40471817 is 71817404.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40471817 - 2² = 40471813 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40471813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 342923 + ... + 343040.

It is an arithmetic number, because the mean of its divisors is an integer number (10289460).

Almost surely, 2^40471817 is an apocalyptic number.

It is an amenable number.

40471817 is a deficient number, since it is larger than the sum of its proper divisors (686023).

40471817 is an equidigital number, since it uses as much as digits as its factorization.

40471817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686022.

The product of its (nonzero) digits is 6272, while the sum is 32.

The square root of 40471817 is about 6361.7463797294. The cubic root of 40471817 is about 343.3345963025.

The spelling of 40471817 in words is "forty million, four hundred seventy-one thousand, eight hundred seventeen".