1288479307 has 8 divisors (see below), whose sum is σ = 1298868032. Its totient is φ = 1278131400.

The previous prime is 1288479293. The next prime is 1288479323. The reversal of 1288479307 is 7039748821.

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 1288479307 - 2²³ = 1280090699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1288479107) 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, 54832 + ... + 74722.

It is an arithmetic number, because the mean of its divisors is an integer number (162358504).

Almost surely, 2^1288479307 is an apocalyptic number.

1288479307 is a deficient number, since it is larger than the sum of its proper divisors (10388725).

1288479307 is a wasteful number, since it uses less digits than its factorization.

1288479307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20409.

The product of its (nonzero) digits is 677376, while the sum is 49.

The square root of 1288479307 is about 35895.3939524279. The cubic root of 1288479307 is about 1088.1593115164.

The spelling of 1288479307 in words is "one billion, two hundred eighty-eight million, four hundred seventy-nine thousand, three hundred seven".