1129397 has 4 divisors (see below), whose sum is σ = 1145376. Its totient is φ = 1113420.

The previous prime is 1129391. The next prime is 1129399. The reversal of 1129397 is 7939211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1129397 - 2⁶ = 1129333 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 (1129391) 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, 7883 + ... + 8024.

It is an arithmetic number, because the mean of its divisors is an integer number (286344).

2^1129397 is an apocalyptic number.

It is an amenable number.

1129397 is a deficient number, since it is larger than the sum of its proper divisors (15979).

1129397 is an equidigital number, since it uses as much as digits as its factorization.

1129397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15978.

The product of its digits is 3402, while the sum is 32.

The square root of 1129397 is about 1062.7309160837. The cubic root of 1129397 is about 104.1395132069.

The spelling of 1129397 in words is "one million, one hundred twenty-nine thousand, three hundred ninety-seven".