39442901 has 2 divisors, whose sum is σ = 39442902. Its totient is φ = 39442900.

The previous prime is 39442891. The next prime is 39442913. The reversal of 39442901 is 10924493.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32547025 + 6895876 = 5705^2 + 2626^2 .

It is a cyclic number.

It is not a de Polignac number, because 39442901 - 2²² = 35248597 is a prime.

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 (39442951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19721450 + 19721451.

It is an arithmetic number, because the mean of its divisors is an integer number (19721451).

Almost surely, 2^39442901 is an apocalyptic number.

It is an amenable number.

39442901 is a deficient number, since it is larger than the sum of its proper divisors (1).

39442901 is an equidigital number, since it uses as much as digits as its factorization.

39442901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 39442901 is about 6280.3583496485. The cubic root of 39442901 is about 340.4000510217.

The spelling of 39442901 in words is "thirty-nine million, four hundred forty-two thousand, nine hundred one".