39634121 has 2 divisors, whose sum is σ = 39634122. Its totient is φ = 39634120.

The previous prime is 39634093. The next prime is 39634139. The reversal of 39634121 is 12143693.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38502025 + 1132096 = 6205^2 + 1064^2 .

It is an emirp because it is prime and its reverse (12143693) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39634121 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (39634421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19817060 + 19817061.

It is an arithmetic number, because the mean of its divisors is an integer number (19817061).

Almost surely, 2^39634121 is an apocalyptic number.

It is an amenable number.

39634121 is a deficient number, since it is larger than the sum of its proper divisors (1).

39634121 is an equidigital number, since it uses as much as digits as its factorization.

39634121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 29.

The square root of 39634121 is about 6295.5635966925. The cubic root of 39634121 is about 340.9492532907.

The spelling of 39634121 in words is "thirty-nine million, six hundred thirty-four thousand, one hundred twenty-one".