39199397 has 2 divisors, whose sum is σ = 39199398. Its totient is φ = 39199396.

The previous prime is 39199379. The next prime is 39199411. The reversal of 39199397 is 79399193.

It is a happy number.

Together with previous prime (39199379) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25664356 + 13535041 = 5066^2 + 3679^2 .

It is a cyclic number.

It is not a de Polignac number, because 39199397 - 2¹⁴ = 39183013 is a prime.

It is a super-4 number, since 4×39199397⁴ (a number of 31 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39199357) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19599698 + 19599699.

It is an arithmetic number, because the mean of its divisors is an integer number (19599699).

Almost surely, 2^39199397 is an apocalyptic number.

It is an amenable number.

39199397 is a deficient number, since it is larger than the sum of its proper divisors (1).

39199397 is an equidigital number, since it uses as much as digits as its factorization.

39199397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 413343, while the sum is 50.

The square root of 39199397 is about 6260.9421814931. The cubic root of 39199397 is about 339.6981086111.

The spelling of 39199397 in words is "thirty-nine million, one hundred ninety-nine thousand, three hundred ninety-seven".