13947471589 has 2 divisors, whose sum is σ = 13947471590. Its totient is φ = 13947471588.

The previous prime is 13947471583. The next prime is 13947471623. The reversal of 13947471589 is 98517474931.

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., 8710488900 + 5236982689 = 93330^2 + 72367^2 .

It is a cyclic number.

It is not a de Polignac number, because 13947471589 - 2³ = 13947471581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13947471581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6973735794 + 6973735795.

It is an arithmetic number, because the mean of its divisors is an integer number (6973735795).

Almost surely, 2^13947471589 is an apocalyptic number.

It is an amenable number.

13947471589 is a deficient number, since it is larger than the sum of its proper divisors (1).

13947471589 is an equidigital number, since it uses as much as digits as its factorization.

13947471589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7620480, while the sum is 58.

The spelling of 13947471589 in words is "thirteen billion, nine hundred forty-seven million, four hundred seventy-one thousand, five hundred eighty-nine".