1297959798 has 8 divisors (see below), whose sum is σ = 2595919608. Its totient is φ = 432653264.

The previous prime is 1297959743. The next prime is 1297959799. The reversal of 1297959798 is 8979597921.

It is a sphenic number, since it is the product of 3 distinct primes.

1297959798 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1297959799) 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, 108163311 + ... + 108163322.

It is an arithmetic number, because the mean of its divisors is an integer number (324489951).

Almost surely, 2^1297959798 is an apocalyptic number.

1297959798 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1297959798 is a wasteful number, since it uses less digits than its factorization.

1297959798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216326638.

The product of its digits is 25719120, while the sum is 66.

The square root of 1297959798 is about 36027.2091342086. The cubic root of 1297959798 is about 1090.8216451662.

The spelling of 1297959798 in words is "one billion, two hundred ninety-seven million, nine hundred fifty-nine thousand, seven hundred ninety-eight".