1299841373 has 4 divisors (see below), whose sum is σ = 1311344508. Its totient is φ = 1288338240.

The previous prime is 1299841349. The next prime is 1299841391. The reversal of 1299841373 is 3731489921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3731489921 = 2503 ⋅1490807.

It can be written as a sum of positive squares in 2 ways, for example, as 661672729 + 638168644 = 25723^2 + 25262^2 .

It is a cyclic number.

It is not a de Polignac number, because 1299841373 - 2¹² = 1299837277 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1299841313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5751398 + ... + 5751623.

It is an arithmetic number, because the mean of its divisors is an integer number (327836127).

Almost surely, 2^1299841373 is an apocalyptic number.

It is an amenable number.

1299841373 is a deficient number, since it is larger than the sum of its proper divisors (11503135).

1299841373 is a wasteful number, since it uses less digits than its factorization.

1299841373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11503134.

The product of its digits is 326592, while the sum is 47.

The square root of 1299841373 is about 36053.3129268310. The cubic root of 1299841373 is about 1091.3484903891.

The spelling of 1299841373 in words is "one billion, two hundred ninety-nine million, eight hundred forty-one thousand, three hundred seventy-three".