798889137 has 4 divisors (see below), whose sum is σ = 1065185520. Its totient is φ = 532592756.

The previous prime is 798889099. The next prime is 798889183. The reversal of 798889137 is 731988897.

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, and also an emirpimes, since its reverse is a distinct semiprime: 731988897 = 3 ⋅243996299.

It is a cyclic number.

It is not a de Polignac number, because 798889137 - 2¹⁰ = 798888113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (798889537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133148187 + ... + 133148192.

It is an arithmetic number, because the mean of its divisors is an integer number (266296380).

Almost surely, 2^798889137 is an apocalyptic number.

It is an amenable number.

798889137 is a deficient number, since it is larger than the sum of its proper divisors (266296383).

798889137 is a wasteful number, since it uses less digits than its factorization.

798889137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266296382.

The product of its digits is 6096384, while the sum is 60.

The square root of 798889137 is about 28264.6269566750. The cubic root of 798889137 is about 927.8878869124.

The spelling of 798889137 in words is "seven hundred ninety-eight million, eight hundred eighty-nine thousand, one hundred thirty-seven".