39160021 has 2 divisors, whose sum is σ = 39160022. Its totient is φ = 39160020.

The previous prime is 39160003. The next prime is 39160067. The reversal of 39160021 is 12006193.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24059025 + 15100996 = 4905^2 + 3886^2 .

It is an emirp because it is prime and its reverse (12006193) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39160021 - 2¹¹ = 39157973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 39159974 and 39160001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39160081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19580010 + 19580011.

It is an arithmetic number, because the mean of its divisors is an integer number (19580011).

Almost surely, 2^39160021 is an apocalyptic number.

It is an amenable number.

39160021 is a deficient number, since it is larger than the sum of its proper divisors (1).

39160021 is an equidigital number, since it uses as much as digits as its factorization.

39160021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 39160021 is about 6257.7968167719. The cubic root of 39160021 is about 339.5843276605.

The spelling of 39160021 in words is "thirty-nine million, one hundred sixty thousand, twenty-one".