39952165 has 16 divisors (see below), whose sum is σ = 52425216. Its totient is φ = 28987200.

The previous prime is 39952153. The next prime is 39952177. The reversal of 39952165 is 56125993.

It is a happy number.

39952165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (39952153) and next prime (39952177).

It is not a de Polignac number, because 39952165 - 2¹¹ = 39950117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39820 + ... + 40810.

It is an arithmetic number, because the mean of its divisors is an integer number (3276576).

Almost surely, 2^39952165 is an apocalyptic number.

It is an amenable number.

39952165 is a deficient number, since it is larger than the sum of its proper divisors (12473051).

39952165 is a wasteful number, since it uses less digits than its factorization.

39952165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1740.

The product of its digits is 72900, while the sum is 40.

The square root of 39952165 is about 6320.7725002566. The cubic root of 39952165 is about 341.8588071232.

Subtracting 39952165 from its reverse (56125993), we obtain a triangular number (16173828 = T₅₆₈₇).

The spelling of 39952165 in words is "thirty-nine million, nine hundred fifty-two thousand, one hundred sixty-five".