40168173 has 4 divisors (see below), whose sum is σ = 53557568. Its totient is φ = 26778780.

The previous prime is 40168159. The next prime is 40168207. The reversal of 40168173 is 37186104.

It is a happy number.

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 not a de Polignac number, because 40168173 - 2¹³ = 40159981 is a prime.

It is a super-2 number, since 2×40168173² = 3226964244315858, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40168173.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40168153) 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, 6694693 + ... + 6694698.

It is an arithmetic number, because the mean of its divisors is an integer number (13389392).

Almost surely, 2^40168173 is an apocalyptic number.

It is an amenable number.

40168173 is a deficient number, since it is larger than the sum of its proper divisors (13389395).

40168173 is a wasteful number, since it uses less digits than its factorization.

40168173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13389394.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 40168173 is about 6337.8366182791. The cubic root of 40168173 is about 342.4738055162.

The spelling of 40168173 in words is "forty million, one hundred sixty-eight thousand, one hundred seventy-three".