39195997 has 4 divisors (see below), whose sum is σ = 40460416. Its totient is φ = 37931580.

The previous prime is 39195953. The next prime is 39196007. The reversal of 39195997 is 79959193.

39195997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 79959193 = 4099 ⋅19507.

It is a cyclic number.

It is not a de Polignac number, because 39195997 - 2¹¹ = 39193949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39195097) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 632163 + ... + 632224.

It is an arithmetic number, because the mean of its divisors is an integer number (10115104).

Almost surely, 2^39195997 is an apocalyptic number.

It is an amenable number.

39195997 is a deficient number, since it is larger than the sum of its proper divisors (1264419).

39195997 is a wasteful number, since it uses less digits than its factorization.

39195997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1264418.

The product of its digits is 688905, while the sum is 52.

The square root of 39195997 is about 6260.6706509766. The cubic root of 39195997 is about 339.6882869722.

The spelling of 39195997 in words is "thirty-nine million, one hundred ninety-five thousand, nine hundred ninety-seven".