40173761 has 4 divisors (see below), whose sum is σ = 40186452. Its totient is φ = 40161072.

The previous prime is 40173697. The next prime is 40173769. The reversal of 40173761 is 16737104.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1547536 + 38626225 = 1244^2 + 6215^2 .

It is a cyclic number.

It is not a de Polignac number, because 40173761 - 2⁶ = 40173697 is a prime.

It is a super-2 number, since 2×40173761² = 3227862145770242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40173769) 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, 2735 + ... + 9371.

It is an arithmetic number, because the mean of its divisors is an integer number (10046613).

Almost surely, 2^40173761 is an apocalyptic number.

It is an amenable number.

40173761 is a deficient number, since it is larger than the sum of its proper divisors (12691).

40173761 is an equidigital number, since it uses as much as digits as its factorization.

40173761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12690.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 40173761 is about 6338.2774473827. The cubic root of 40173761 is about 342.4896858741.

The spelling of 40173761 in words is "forty million, one hundred seventy-three thousand, seven hundred sixty-one".