39073381 has 2 divisors, whose sum is σ = 39073382. Its totient is φ = 39073380.

The previous prime is 39073351. The next prime is 39073387. The reversal of 39073381 is 18337093.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37088100 + 1985281 = 6090^2 + 1409^2 .

It is an emirp because it is prime and its reverse (18337093) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39073381 - 2¹³ = 39065189 is a prime.

It is a super-2 number, since 2×39073381² = 3053458205542322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39073387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19536690 + 19536691.

It is an arithmetic number, because the mean of its divisors is an integer number (19536691).

Almost surely, 2^39073381 is an apocalyptic number.

It is an amenable number.

39073381 is a deficient number, since it is larger than the sum of its proper divisors (1).

39073381 is an equidigital number, since it uses as much as digits as its factorization.

39073381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 39073381 is about 6250.8704193896. The cubic root of 39073381 is about 339.3337037662. Note that the first 3 decimals are identical.

The spelling of 39073381 in words is "thirty-nine million, seventy-three thousand, three hundred eighty-one".