389652629 has 2 divisors, whose sum is σ = 389652630. Its totient is φ = 389652628.

The previous prime is 389652623. The next prime is 389652649. The reversal of 389652629 is 926256983.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 380055025 + 9597604 = 19495^2 + 3098^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-389652629 is a prime.

It is a super-2 number, since 2×389652629² = 303658342573223282, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389652623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194826314 + 194826315.

It is an arithmetic number, because the mean of its divisors is an integer number (194826315).

Almost surely, 2^389652629 is an apocalyptic number.

It is an amenable number.

389652629 is a deficient number, since it is larger than the sum of its proper divisors (1).

389652629 is an equidigital number, since it uses as much as digits as its factorization.

389652629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1399680, while the sum is 50.

The square root of 389652629 is about 19739.6207916971. The cubic root of 389652629 is about 730.3973748180.

The spelling of 389652629 in words is "three hundred eighty-nine million, six hundred fifty-two thousand, six hundred twenty-nine".