1129269973 has 4 divisors (see below), whose sum is σ = 1216136908. Its totient is φ = 1042403040.

The previous prime is 1129269961. The next prime is 1129269983. The reversal of 1129269973 is 3799629211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3799629211 = 7 ⋅542804173.

It can be written as a sum of positive squares in 2 ways, for example, as 135885649 + 993384324 = 11657^2 + 31518^2 .

It is a cyclic number.

It is not a de Polignac number, because 1129269973 - 2⁹ = 1129269461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1129269943) 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, 43433448 + ... + 43433473.

It is an arithmetic number, because the mean of its divisors is an integer number (304034227).

Almost surely, 2^1129269973 is an apocalyptic number.

1129269973 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1129269973 is a deficient number, since it is larger than the sum of its proper divisors (86866935).

1129269973 is an equidigital number, since it uses as much as digits as its factorization.

1129269973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86866934.

The product of its digits is 367416, while the sum is 49.

The square root of 1129269973 is about 33604.6123768747. The cubic root of 1129269973 is about 1041.3560875582.

The spelling of 1129269973 in words is "one billion, one hundred twenty-nine million, two hundred sixty-nine thousand, nine hundred seventy-three".