40170173 has 4 divisors (see below), whose sum is σ = 40184508. Its totient is φ = 40155840.

The previous prime is 40170149. The next prime is 40170211. The reversal of 40170173 is 37107104.

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 13935289 + 26234884 = 3733^2 + 5122^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40170173 is a prime.

It is a super-2 number, since 2×40170173² = 3227285597699858, 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 (40170113) 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, 1436 + ... + 9077.

It is an arithmetic number, because the mean of its divisors is an integer number (10046127).

Almost surely, 2^40170173 is an apocalyptic number.

It is an amenable number.

40170173 is a deficient number, since it is larger than the sum of its proper divisors (14335).

40170173 is a wasteful number, since it uses less digits than its factorization.

40170173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14334.

The product of its (nonzero) digits is 588, while the sum is 23.

The square root of 40170173 is about 6337.9943988615. The cubic root of 40170173 is about 342.4794894212.

Adding to 40170173 its reverse (37107104), we get a palindrome (77277277).

The spelling of 40170173 in words is "forty million, one hundred seventy thousand, one hundred seventy-three".