39870097 has 4 divisors (see below), whose sum is σ = 39904180. Its totient is φ = 39836016.

The previous prime is 39870091. The next prime is 39870107. The reversal of 39870097 is 79007893.

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 10265616 + 29604481 = 3204^2 + 5441^2 .

It is a cyclic number.

It is not a de Polignac number, because 39870097 - 2⁷ = 39869969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39870091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15222 + ... + 17647.

It is an arithmetic number, because the mean of its divisors is an integer number (9976045).

Almost surely, 2^39870097 is an apocalyptic number.

It is an amenable number.

39870097 is a deficient number, since it is larger than the sum of its proper divisors (34083).

39870097 is a wasteful number, since it uses less digits than its factorization.

39870097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34082.

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 39870097 is about 6314.2772349652. The cubic root of 39870097 is about 341.6245694978.

The spelling of 39870097 in words is "thirty-nine million, eight hundred seventy thousand, ninety-seven".