1296208487 has 8 divisors (see below), whose sum is σ = 1529167872. Its totient is φ = 1075195800.

The previous prime is 1296208429. The next prime is 1296208523. The reversal of 1296208487 is 7848026921.

It is a happy number.

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

It is not a de Polignac number, because 1296208487 - 2¹² = 1296204391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1296208687) 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, 2986439 + ... + 2986872.

It is an arithmetic number, because the mean of its divisors is an integer number (191145984).

Almost surely, 2^1296208487 is an apocalyptic number.

1296208487 is a deficient number, since it is larger than the sum of its proper divisors (232959385).

1296208487 is an equidigital number, since it uses as much as digits as its factorization.

1296208487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5973349.

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 1296208487 is about 36002.8955363315. The cubic root of 1296208487 is about 1090.3308164567.

The spelling of 1296208487 in words is "one billion, two hundred ninety-six million, two hundred eight thousand, four hundred eighty-seven".