1283964799 has 4 divisors (see below), whose sum is σ = 1382731336. Its totient is φ = 1185198264.

The previous prime is 1283964791. The next prime is 1283964817. The reversal of 1283964799 is 9974693821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9974693821 = 383 ⋅26043587.

It is a cyclic number.

It is not a de Polignac number, because 1283964799 - 2³ = 1283964791 is a prime.

It is a super-2 number, since 2×1283964799² = 3297131210142220802, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1283964791) 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, 49383249 + ... + 49383274.

It is an arithmetic number, because the mean of its divisors is an integer number (345682834).

Almost surely, 2^1283964799 is an apocalyptic number.

1283964799 is a deficient number, since it is larger than the sum of its proper divisors (98766537).

1283964799 is an equidigital number, since it uses as much as digits as its factorization.

1283964799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98766536.

The product of its digits is 5878656, while the sum is 58.

The square root of 1283964799 is about 35832.4545489142. The cubic root of 1283964799 is about 1086.8869453304.

The spelling of 1283964799 in words is "one billion, two hundred eighty-three million, nine hundred sixty-four thousand, seven hundred ninety-nine".