39320689 has 2 divisors, whose sum is σ = 39320690. Its totient is φ = 39320688.

The previous prime is 39320657. The next prime is 39320693. The reversal of 39320689 is 98602393.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20250000 + 19070689 = 4500^2 + 4367^2 .

It is a cyclic number.

It is not a de Polignac number, because 39320689 - 2⁵ = 39320657 is a prime.

It is a super-2 number, since 2×39320689² = 3092233166869442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (39320389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19660344 + 19660345.

It is an arithmetic number, because the mean of its divisors is an integer number (19660345).

Almost surely, 2^39320689 is an apocalyptic number.

It is an amenable number.

39320689 is a deficient number, since it is larger than the sum of its proper divisors (1).

39320689 is an equidigital number, since it uses as much as digits as its factorization.

39320689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 39320689 is about 6270.6211016135. The cubic root of 39320689 is about 340.0481160278.

The spelling of 39320689 in words is "thirty-nine million, three hundred twenty thousand, six hundred eighty-nine".