39801071 has 2 divisors, whose sum is σ = 39801072. Its totient is φ = 39801070.

The previous prime is 39801059. The next prime is 39801077. The reversal of 39801071 is 17010893.

It is a strong prime.

It is an emirp because it is prime and its reverse (17010893) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39801071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39801077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19900535 + 19900536.

It is an arithmetic number, because the mean of its divisors is an integer number (19900536).

Almost surely, 2^39801071 is an apocalyptic number.

39801071 is a deficient number, since it is larger than the sum of its proper divisors (1).

39801071 is an equidigital number, since it uses as much as digits as its factorization.

39801071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 39801071 is about 6308.8090001204. The cubic root of 39801071 is about 341.4273072153.

The spelling of 39801071 in words is "thirty-nine million, eight hundred one thousand, seventy-one".