389931277397293 has 2 divisors, whose sum is σ = 389931277397294. Its totient is φ = 389931277397292.

The previous prime is 389931277397261. The next prime is 389931277397399. The reversal of 389931277397293 is 392793772139983.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 303197315403844 + 86733961993449 = 17412562^2 + 9313107^2 .

It is a cyclic number.

It is not a de Polignac number, because 389931277397293 - 2⁵ = 389931277397261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389931277397203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194965638698646 + 194965638698647.

It is an arithmetic number, because the mean of its divisors is an integer number (194965638698647).

Almost surely, 2^{389931277397293} is an apocalyptic number.

It is an amenable number.

389931277397293 is a deficient number, since it is larger than the sum of its proper divisors (1).

389931277397293 is an equidigital number, since it uses as much as digits as its factorization.

389931277397293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5833096416, while the sum is 82.

The spelling of 389931277397293 in words is "three hundred eighty-nine trillion, nine hundred thirty-one billion, two hundred seventy-seven million, three hundred ninety-seven thousand, two hundred ninety-three".