39102989 has 2 divisors, whose sum is σ = 39102990. Its totient is φ = 39102988.

The previous prime is 39102983. The next prime is 39103003. The reversal of 39102989 is 98920193.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22562500 + 16540489 = 4750^2 + 4067^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39102989 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39102983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19551494 + 19551495.

It is an arithmetic number, because the mean of its divisors is an integer number (19551495).

Almost surely, 2^39102989 is an apocalyptic number.

It is an amenable number.

39102989 is a deficient number, since it is larger than the sum of its proper divisors (1).

39102989 is an equidigital number, since it uses as much as digits as its factorization.

39102989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 41.

The square root of 39102989 is about 6253.2382810829. The cubic root of 39102989 is about 339.4193925855.

The spelling of 39102989 in words is "thirty-nine million, one hundred two thousand, nine hundred eighty-nine".