1299859432 has 16 divisors (see below), whose sum is σ = 2503108260. Its totient is φ = 632363904.

The previous prime is 1299859411. The next prime is 1299859459. The reversal of 1299859432 is 2349589921.

It can be written as a sum of positive squares in 2 ways, for example, as 1132053316 + 167806116 = 33646^2 + 12954^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1299859432.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2195413 + ... + 2196004.

Almost surely, 2^1299859432 is an apocalyptic number.

It is an amenable number.

1299859432 is a deficient number, since it is larger than the sum of its proper divisors (1203248828).

1299859432 is a wasteful number, since it uses less digits than its factorization.

1299859432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4391460 (or 4391456 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 52.

The square root of 1299859432 is about 36053.5633745127. The cubic root of 1299859432 is about 1091.3535444856.

The spelling of 1299859432 in words is "one billion, two hundred ninety-nine million, eight hundred fifty-nine thousand, four hundred thirty-two".