39961193 has 2 divisors, whose sum is σ = 39961194. Its totient is φ = 39961192.

The previous prime is 39961171. The next prime is 39961223. The reversal of 39961193 is 39116993.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39100009 + 861184 = 6253^2 + 928^2 .

It is a cyclic number.

It is not a de Polignac number, because 39961193 - 2¹⁴ = 39944809 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 39961193.

It is not a weakly prime, because it can be changed into another prime (39961133) 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 as a sum of consecutive naturals, namely, 19980596 + 19980597.

It is an arithmetic number, because the mean of its divisors is an integer number (19980597).

Almost surely, 2^39961193 is an apocalyptic number.

It is an amenable number.

39961193 is a deficient number, since it is larger than the sum of its proper divisors (1).

39961193 is an equidigital number, since it uses as much as digits as its factorization.

39961193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 39366, while the sum is 41.

The square root of 39961193 is about 6321.4866131314. The cubic root of 39961193 is about 341.8845551552.

The spelling of 39961193 in words is "thirty-nine million, nine hundred sixty-one thousand, one hundred ninety-three".