39596981 has 2 divisors, whose sum is σ = 39596982. Its totient is φ = 39596980.

The previous prime is 39596959. The next prime is 39596987. The reversal of 39596981 is 18969593.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25654225 + 13942756 = 5065^2 + 3734^2 .

It is a cyclic number.

It is not a de Polignac number, because 39596981 - 2⁶ = 39596917 is a prime.

It is a super-2 number, since 2×39596981² = 3135841808628722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39596987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19798490 + 19798491.

It is an arithmetic number, because the mean of its divisors is an integer number (19798491).

Almost surely, 2^39596981 is an apocalyptic number.

It is an amenable number.

39596981 is a deficient number, since it is larger than the sum of its proper divisors (1).

39596981 is an equidigital number, since it uses as much as digits as its factorization.

39596981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 524880, while the sum is 50.

The square root of 39596981 is about 6292.6132091525. The cubic root of 39596981 is about 340.8427220802.

The spelling of 39596981 in words is "thirty-nine million, five hundred ninety-six thousand, nine hundred eighty-one".