40146817 has 6 divisors (see below), whose sum is σ = 41579798. Its totient is φ = 38761632.

The previous prime is 40146797. The next prime is 40146833. The reversal of 40146817 is 71864104.

It can be written as a sum of positive squares in 3 ways, for example, as 758641 + 39388176 = 871^2 + 6276^2 .

It is not a de Polignac number, because 40146817 - 2¹⁵ = 40114049 is a prime.

It is a super-2 number, since 2×40146817² = 3223533830462978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40146217) 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 5 ways as a sum of consecutive naturals, for example, 23028 + ... + 24709.

Almost surely, 2^40146817 is an apocalyptic number.

It is an amenable number.

40146817 is a deficient number, since it is larger than the sum of its proper divisors (1432981).

40146817 is an equidigital number, since it uses as much as digits as its factorization.

40146817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47795 (or 47766 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 40146817 is about 6336.1515922522. The cubic root of 40146817 is about 342.4131010114.

The spelling of 40146817 in words is "forty million, one hundred forty-six thousand, eight hundred seventeen".