1296987395 has 8 divisors (see below), whose sum is σ = 1697874480. Its totient is φ = 943263520.

The previous prime is 1296987389. The next prime is 1296987397. The reversal of 1296987395 is 5937896921.

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

It is not a de Polignac number, because 1296987395 - 2⁴ = 1296987379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1296987397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11790740 + ... + 11790849.

It is an arithmetic number, because the mean of its divisors is an integer number (212234310).

Almost surely, 2^1296987395 is an apocalyptic number.

1296987395 is a deficient number, since it is larger than the sum of its proper divisors (400887085).

1296987395 is a wasteful number, since it uses less digits than its factorization.

1296987395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23581605.

The product of its digits is 7348320, while the sum is 59.

The square root of 1296987395 is about 36013.7112083717. The cubic root of 1296987395 is about 1090.5491705638.

The spelling of 1296987395 in words is "one billion, two hundred ninety-six million, nine hundred eighty-seven thousand, three hundred ninety-five".