159998477 has 2 divisors, whose sum is σ = 159998478. Its totient is φ = 159998476.

The previous prime is 159998437. The next prime is 159998483. The reversal of 159998477 is 774899951.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 159112996 + 885481 = 12614^2 + 941^2 .

It is a cyclic number.

It is not a de Polignac number, because 159998477 - 2¹⁸ = 159736333 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159998437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79999238 + 79999239.

It is an arithmetic number, because the mean of its divisors is an integer number (79999239).

Almost surely, 2^159998477 is an apocalyptic number.

It is an amenable number.

159998477 is a deficient number, since it is larger than the sum of its proper divisors (1).

159998477 is an equidigital number, since it uses as much as digits as its factorization.

159998477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5715360, while the sum is 59.

The square root of 159998477 is about 12649.0504386693. The cubic root of 159998477 is about 542.8818007893.

It can be divided in two parts, 1599984 and 77, that added together give a palindrome (1600061).

The spelling of 159998477 in words is "one hundred fifty-nine million, nine hundred ninety-eight thousand, four hundred seventy-seven".