159800397 has 4 divisors (see below), whose sum is σ = 213067200. Its totient is φ = 106533596.

The previous prime is 159800387. The next prime is 159800401. The reversal of 159800397 is 793008951.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 159800397 - 2²³ = 151411789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159800387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26633397 + ... + 26633402.

It is an arithmetic number, because the mean of its divisors is an integer number (53266800).

Almost surely, 2^159800397 is an apocalyptic number.

It is an amenable number.

159800397 is a deficient number, since it is larger than the sum of its proper divisors (53266803).

159800397 is an equidigital number, since it uses as much as digits as its factorization.

159800397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53266802.

The product of its (nonzero) digits is 68040, while the sum is 42.

The square root of 159800397 is about 12641.2181770587. The cubic root of 159800397 is about 542.6576769189.

The spelling of 159800397 in words is "one hundred fifty-nine million, eight hundred thousand, three hundred ninety-seven".