1297969493 has 16 divisors (see below), whose sum is σ = 1337064960. Its totient is φ = 1259603136.

The previous prime is 1297969487. The next prime is 1297969507. The reversal of 1297969493 is 3949697921.

It is a cyclic number.

It is not a de Polignac number, because 1297969493 - 2⁸ = 1297969237 is a prime.

It is a Duffinian 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 (1297969403) 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 15 ways as a sum of consecutive naturals, for example, 1628171 + ... + 1628967.

It is an arithmetic number, because the mean of its divisors is an integer number (83566560).

Almost surely, 2^1297969493 is an apocalyptic number.

It is an amenable number.

1297969493 is a deficient number, since it is larger than the sum of its proper divisors (39095467).

1297969493 is a wasteful number, since it uses less digits than its factorization.

1297969493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1196.

The product of its digits is 6613488, while the sum is 59.

The square root of 1297969493 is about 36027.3436850401. The cubic root of 1297969493 is about 1090.8243610925.

The spelling of 1297969493 in words is "one billion, two hundred ninety-seven million, nine hundred sixty-nine thousand, four hundred ninety-three".