389987322061 has 2 divisors, whose sum is σ = 389987322062. Its totient is φ = 389987322060.

The previous prime is 389987321887. The next prime is 389987322073. The reversal of 389987322061 is 160223789983.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 351180686025 + 38806636036 = 592605^2 + 196994^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-389987322061 is a prime.

It is a super-2 number, since 2×389987322061² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 389987321987 and 389987322005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389987322161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194993661030 + 194993661031.

It is an arithmetic number, because the mean of its divisors is an integer number (194993661031).

Almost surely, 2^389987322061 is an apocalyptic number.

It is an amenable number.

389987322061 is a deficient number, since it is larger than the sum of its proper divisors (1).

389987322061 is an equidigital number, since it uses as much as digits as its factorization.

389987322061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7838208, while the sum is 58.

The spelling of 389987322061 in words is "three hundred eighty-nine billion, nine hundred eighty-seven million, three hundred twenty-two thousand, sixty-one".