39914881 has 2 divisors, whose sum is σ = 39914882. Its totient is φ = 39914880.

The previous prime is 39914873. The next prime is 39914893. The reversal of 39914881 is 18841993.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27248400 + 12666481 = 5220^2 + 3559^2 .

It is a cyclic number.

It is not a de Polignac number, because 39914881 - 2³ = 39914873 is a prime.

It is a super-2 number, since 2×39914881² = 3186395450488322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (39914681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19957440 + 19957441.

It is an arithmetic number, because the mean of its divisors is an integer number (19957441).

Almost surely, 2^39914881 is an apocalyptic number.

It is an amenable number.

39914881 is a deficient number, since it is larger than the sum of its proper divisors (1).

39914881 is an equidigital number, since it uses as much as digits as its factorization.

39914881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 43.

The square root of 39914881 is about 6317.8224888010. The cubic root of 39914881 is about 341.7524313218.

The spelling of 39914881 in words is "thirty-nine million, nine hundred fourteen thousand, eight hundred eighty-one".