39674981 has 2 divisors, whose sum is σ = 39674982. Its totient is φ = 39674980.

The previous prime is 39674969. The next prime is 39675001. The reversal of 39674981 is 18947693.

39674981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28718881 + 10956100 = 5359^2 + 3310^2 .

It is a cyclic number.

It is not a de Polignac number, because 39674981 - 2⁶ = 39674917 is a prime.

It is a super-2 number, since 2×39674981² = 3148208234700722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39674911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19837490 + 19837491.

It is an arithmetic number, because the mean of its divisors is an integer number (19837491).

Almost surely, 2^39674981 is an apocalyptic number.

It is an amenable number.

39674981 is a deficient number, since it is larger than the sum of its proper divisors (1).

39674981 is an equidigital number, since it uses as much as digits as its factorization.

39674981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 47.

The square root of 39674981 is about 6298.8079030877. The cubic root of 39674981 is about 341.0663779761.

The spelling of 39674981 in words is "thirty-nine million, six hundred seventy-four thousand, nine hundred eighty-one".