40163173 has 4 divisors (see below), whose sum is σ = 41548140. Its totient is φ = 38778208.

The previous prime is 40163143. The next prime is 40163177. The reversal of 40163173 is 37136104.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26040609 + 14122564 = 5103^2 + 3758^2 .

It is a cyclic number.

It is not a de Polignac number, because 40163173 - 2¹³ = 40154981 is a prime.

It is a super-2 number, since 2×40163173² = 3226160930855858, which contains 22 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 (40163177) 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, 692440 + ... + 692497.

It is an arithmetic number, because the mean of its divisors is an integer number (10387035).

Almost surely, 2^40163173 is an apocalyptic number.

It is an amenable number.

40163173 is a deficient number, since it is larger than the sum of its proper divisors (1384967).

40163173 is a wasteful number, since it uses less digits than its factorization.

40163173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1384966.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 40163173 is about 6337.4421496373. The cubic root of 40163173 is about 342.4595949281.

Adding to 40163173 its reverse (37136104), we get a palindrome (77299277).

The spelling of 40163173 in words is "forty million, one hundred sixty-three thousand, one hundred seventy-three".