39952171 has 4 divisors (see below), whose sum is σ = 45659632. Its totient is φ = 34244712.

The previous prime is 39952153. The next prime is 39952177. The reversal of 39952171 is 17125993.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17125993 = 1063 ⋅16111.

It is a cyclic number.

It is not a de Polignac number, because 39952171 - 2⁵ = 39952139 is a prime.

It is a super-2 number, since 2×39952171² = 3192351935226482, 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 39952171.

It is not an unprimeable number, because it can be changed into a prime (39952177) 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, 2853720 + ... + 2853733.

It is an arithmetic number, because the mean of its divisors is an integer number (11414908).

Almost surely, 2^39952171 is an apocalyptic number.

39952171 is a deficient number, since it is larger than the sum of its proper divisors (5707461).

39952171 is an equidigital number, since it uses as much as digits as its factorization.

39952171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5707460.

The product of its digits is 17010, while the sum is 37.

The square root of 39952171 is about 6320.7729748821. The cubic root of 39952171 is about 341.8588242366.

The spelling of 39952171 in words is "thirty-nine million, nine hundred fifty-two thousand, one hundred seventy-one".