1297897369 has 8 divisors (see below), whose sum is σ = 1313489088. Its totient is φ = 1282359600.

The previous prime is 1297897361. The next prime is 1297897409. The reversal of 1297897369 is 9637987921.

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

It is a cyclic number.

It is not a de Polignac number, because 1297897369 - 2³ = 1297897361 is a prime.

It is a super-2 number, since 2×1297897369² = 3369075160914244322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1297897361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35994 + ... + 62380.

It is an arithmetic number, because the mean of its divisors is an integer number (164186136).

Almost surely, 2^1297897369 is an apocalyptic number.

It is an amenable number.

1297897369 is a deficient number, since it is larger than the sum of its proper divisors (15591719).

1297897369 is a wasteful number, since it uses less digits than its factorization.

1297897369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26975.

The product of its digits is 10287648, while the sum is 61.

The square root of 1297897369 is about 36026.3427091899. The cubic root of 1297897369 is about 1090.8041561817.

The spelling of 1297897369 in words is "one billion, two hundred ninety-seven million, eight hundred ninety-seven thousand, three hundred sixty-nine".