39098681 has 2 divisors, whose sum is σ = 39098682. Its totient is φ = 39098680.

The previous prime is 39098669. The next prime is 39098687. The reversal of 39098681 is 18689093.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29333056 + 9765625 = 5416^2 + 3125^2 .

It is an emirp because it is prime and its reverse (18689093) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 39098681 - 2⁶ = 39098617 is a prime.

It is a super-2 number, since 2×39098681² = 3057413711879522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (39098687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19549340 + 19549341.

It is an arithmetic number, because the mean of its divisors is an integer number (19549341).

Almost surely, 2^39098681 is an apocalyptic number.

It is an amenable number.

39098681 is a deficient number, since it is larger than the sum of its proper divisors (1).

39098681 is an equidigital number, since it uses as much as digits as its factorization.

39098681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 39098681 is about 6252.8938100691. The cubic root of 39098681 is about 339.4069274477.

The spelling of 39098681 in words is "thirty-nine million, ninety-eight thousand, six hundred eighty-one".