39450161 has 2 divisors, whose sum is σ = 39450162. Its totient is φ = 39450160.

The previous prime is 39450157. The next prime is 39450163. The reversal of 39450161 is 16105493.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32262400 + 7187761 = 5680^2 + 2681^2 .

It is a cyclic number.

It is not a de Polignac number, because 39450161 - 2² = 39450157 is a prime.

It is a Sophie Germain prime.

Together with 39450163, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (39450163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19725080 + 19725081.

It is an arithmetic number, because the mean of its divisors is an integer number (19725081).

Almost surely, 2^39450161 is an apocalyptic number.

It is an amenable number.

39450161 is a deficient number, since it is larger than the sum of its proper divisors (1).

39450161 is an equidigital number, since it uses as much as digits as its factorization.

39450161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 39450161 is about 6280.9363155504. The cubic root of 39450161 is about 340.4209348200.

The spelling of 39450161 in words is "thirty-nine million, four hundred fifty thousand, one hundred sixty-one".