39828197 has 4 divisors (see below), whose sum is σ = 39954156. Its totient is φ = 39702240.

The previous prime is 39828193. The next prime is 39828209. The reversal of 39828197 is 79182893.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79182893 = 4801 ⋅16493.

It can be written as a sum of positive squares in 2 ways, for example, as 3996001 + 35832196 = 1999^2 + 5986^2 .

It is a cyclic number.

It is not a de Polignac number, because 39828197 - 2² = 39828193 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 (39828193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62504 + ... + 63137.

It is an arithmetic number, because the mean of its divisors is an integer number (9988539).

Almost surely, 2^39828197 is an apocalyptic number.

It is an amenable number.

39828197 is a deficient number, since it is larger than the sum of its proper divisors (125959).

39828197 is a wasteful number, since it uses less digits than its factorization.

39828197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125958.

The product of its digits is 217728, while the sum is 47.

The square root of 39828197 is about 6310.9584850481. The cubic root of 39828197 is about 341.5048549937.

The spelling of 39828197 in words is "thirty-nine million, eight hundred twenty-eight thousand, one hundred ninety-seven".