39121273 has 2 divisors, whose sum is σ = 39121274. Its totient is φ = 39121272.

The previous prime is 39121241. The next prime is 39121279. The reversal of 39121273 is 37212193.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38775529 + 345744 = 6227^2 + 588^2 .

It is an emirp because it is prime and its reverse (37212193) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39121273 - 2⁵ = 39121241 is a prime.

It is a super-2 number, since 2×39121273² = 3060948002281058, which contains 22 as substring.

It is equal to p_2383336 and since 39121273 and 2383336 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (39121279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19560636 + 19560637.

It is an arithmetic number, because the mean of its divisors is an integer number (19560637).

Almost surely, 2^39121273 is an apocalyptic number.

It is an amenable number.

39121273 is a deficient number, since it is larger than the sum of its proper divisors (1).

39121273 is an equidigital number, since it uses as much as digits as its factorization.

39121273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2268, while the sum is 28.

The square root of 39121273 is about 6254.7000727453. The cubic root of 39121273 is about 339.4722868980.

The spelling of 39121273 in words is "thirty-nine million, one hundred twenty-one thousand, two hundred seventy-three".