389652649 has 2 divisors, whose sum is σ = 389652650. Its totient is φ = 389652648.

The previous prime is 389652629. The next prime is 389652667. The reversal of 389652649 is 946256983.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 212576400 + 177076249 = 14580^2 + 13307^2 .

It is a cyclic number.

It is not a de Polignac number, because 389652649 - 2⁷ = 389652521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 389652596 and 389652605.

It is not a weakly prime, because it can be changed into another prime (389652619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194826324 + 194826325.

It is an arithmetic number, because the mean of its divisors is an integer number (194826325).

Almost surely, 2^389652649 is an apocalyptic number.

It is an amenable number.

389652649 is a deficient number, since it is larger than the sum of its proper divisors (1).

389652649 is an equidigital number, since it uses as much as digits as its factorization.

389652649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2799360, while the sum is 52.

The square root of 389652649 is about 19739.6212982924. The cubic root of 389652649 is about 730.3973873145.

It can be divided in two parts, 38965 and 2649, that added together give a palindrome (41614).

The spelling of 389652649 in words is "three hundred eighty-nine million, six hundred fifty-two thousand, six hundred forty-nine".