39740189 has 2 divisors, whose sum is σ = 39740190. Its totient is φ = 39740188.

The previous prime is 39740149. The next prime is 39740231. The reversal of 39740189 is 98104793.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20748025 + 18992164 = 4555^2 + 4358^2 .

It is a cyclic number.

It is not a de Polignac number, because 39740189 - 2⁸ = 39739933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39740119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19870094 + 19870095.

It is an arithmetic number, because the mean of its divisors is an integer number (19870095).

Almost surely, 2^39740189 is an apocalyptic number.

It is an amenable number.

39740189 is a deficient number, since it is larger than the sum of its proper divisors (1).

39740189 is an equidigital number, since it uses as much as digits as its factorization.

39740189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 39740189 is about 6303.9819955327. The cubic root of 39740189 is about 341.2531294466.

The spelling of 39740189 in words is "thirty-nine million, seven hundred forty thousand, one hundred eighty-nine".