1139797 has 4 divisors (see below), whose sum is σ = 1164096. Its totient is φ = 1115500.

The previous prime is 1139779. The next prime is 1139807. The reversal of 1139797 is 7979311.

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, and also an emirpimes, since its reverse is a distinct semiprime: 7979311 = 107 ⋅74573.

It is a cyclic number.

It is not a de Polignac number, because 1139797 - 2⁷ = 1139669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139717) 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, 12079 + ... + 12172.

It is an arithmetic number, because the mean of its divisors is an integer number (291024).

2^1139797 is an apocalyptic number.

It is an amenable number.

1139797 is a deficient number, since it is larger than the sum of its proper divisors (24299).

1139797 is an equidigital number, since it uses as much as digits as its factorization.

1139797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24298.

The product of its digits is 11907, while the sum is 37.

The square root of 1139797 is about 1067.6127575109. The cubic root of 1139797 is about 104.4581916499.

It can be divided in two parts, 1139 and 797, that added together give a square (1936 = 44²).

The spelling of 1139797 in words is "one million, one hundred thirty-nine thousand, seven hundred ninety-seven".