1296679408 has 40 divisors (see below), whose sum is σ = 2632133120. Its totient is φ = 618045120.

The previous prime is 1296679387. The next prime is 1296679427. The reversal of 1296679408 is 8049766921.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13723 + ... + 52741.

It is an arithmetic number, because the mean of its divisors is an integer number (65803328).

Almost surely, 2^1296679408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1296679408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1316066560).

1296679408 is an abundant number, since it is smaller than the sum of its proper divisors (1335453712).

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

1296679408 is a wasteful number, since it uses less digits than its factorization.

1296679408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39125 (or 39119 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 52.

The square root of 1296679408 is about 36009.4349858478. The cubic root of 1296679408 is about 1090.4628419024.

The spelling of 1296679408 in words is "one billion, two hundred ninety-six million, six hundred seventy-nine thousand, four hundred eight".