1149397 has 4 divisors (see below), whose sum is σ = 1156876. Its totient is φ = 1141920.

The previous prime is 1149373. The next prime is 1149403. The reversal of 1149397 is 7939411.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 96721 + 1052676 = 311^2 + 1026^2 .

It is a cyclic number.

It is not a de Polignac number, because 1149397 - 2¹⁹ = 625109 is a prime.

It is a super-2 number, since 2×1149397² = 2642226927218, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

1149397 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1149307) 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, 3504 + ... + 3817.

It is an arithmetic number, because the mean of its divisors is an integer number (289219).

2^1149397 is an apocalyptic number.

It is an amenable number.

1149397 is a deficient number, since it is larger than the sum of its proper divisors (7479).

1149397 is an equidigital number, since it uses as much as digits as its factorization.

1149397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7478.

The product of its digits is 6804, while the sum is 34.

The square root of 1149397 is about 1072.0993424119. The cubic root of 1149397 is about 104.7506403243.

The spelling of 1149397 in words is "one million, one hundred forty-nine thousand, three hundred ninety-seven".