389999996902669 has 2 divisors, whose sum is σ = 389999996902670. Its totient is φ = 389999996902668.

The previous prime is 389999996902651. The next prime is 389999996902697. The reversal of 389999996902669 is 966209699999983.

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., 282190442175625 + 107809554727044 = 16798525^2 + 10383138^2 .

It is a cyclic number.

It is not a de Polignac number, because 389999996902669 - 2¹⁹ = 389999996378381 is a prime.

It is a super-2 number, since 2×389999996902669² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389999996902609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194999998451334 + 194999998451335.

It is an arithmetic number, because the mean of its divisors is an integer number (194999998451335).

Almost surely, 2^{389999996902669} is an apocalyptic number.

It is an amenable number.

389999996902669 is a deficient number, since it is larger than the sum of its proper divisors (1).

389999996902669 is an equidigital number, since it uses as much as digits as its factorization.

389999996902669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 446308403328, while the sum is 103.

The spelling of 389999996902669 in words is "three hundred eighty-nine trillion, nine hundred ninety-nine billion, nine hundred ninety-six million, nine hundred two thousand, six hundred sixty-nine".