39391241 has 2 divisors, whose sum is σ = 39391242. Its totient is φ = 39391240.

The previous prime is 39391229. The next prime is 39391271. The reversal of 39391241 is 14219393.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30415225 + 8976016 = 5515^2 + 2996^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39391241 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 39391198 and 39391207.

It is not a weakly prime, because it can be changed into another prime (39391271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19695620 + 19695621.

It is an arithmetic number, because the mean of its divisors is an integer number (19695621).

Almost surely, 2^39391241 is an apocalyptic number.

It is an amenable number.

39391241 is a deficient number, since it is larger than the sum of its proper divisors (1).

39391241 is an equidigital number, since it uses as much as digits as its factorization.

39391241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5832, while the sum is 32.

The square root of 39391241 is about 6276.2441794436. The cubic root of 39391241 is about 340.2513740813.

The spelling of 39391241 in words is "thirty-nine million, three hundred ninety-one thousand, two hundred forty-one".