389561292947 has 2 divisors, whose sum is σ = 389561292948. Its totient is φ = 389561292946.

The previous prime is 389561292863. The next prime is 389561292973. The reversal of 389561292947 is 749292165983.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 389561292947 - 2³⁴ = 372381423763 is a prime.

It is not a weakly prime, because it can be changed into another prime (389561292977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194780646473 + 194780646474.

It is an arithmetic number, because the mean of its divisors is an integer number (194780646474).

Almost surely, 2^389561292947 is an apocalyptic number.

389561292947 is a deficient number, since it is larger than the sum of its proper divisors (1).

389561292947 is an equidigital number, since it uses as much as digits as its factorization.

389561292947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58786560, while the sum is 65.

The spelling of 389561292947 in words is "three hundred eighty-nine billion, five hundred sixty-one million, two hundred ninety-two thousand, nine hundred forty-seven".