11439797 has 4 divisors (see below), whose sum is σ = 11458956. Its totient is φ = 11420640.

The previous prime is 11439761. The next prime is 11439811. The reversal of 11439797 is 79793411.

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 2283121 + 9156676 = 1511^2 + 3026^2 .

It is a cyclic number.

It is not a de Polignac number, because 11439797 - 2⁸ = 11439541 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 (11439707) 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, 8654 + ... + 9887.

It is an arithmetic number, because the mean of its divisors is an integer number (2864739).

Almost surely, 2^11439797 is an apocalyptic number.

It is an amenable number.

11439797 is a deficient number, since it is larger than the sum of its proper divisors (19159).

11439797 is an equidigital number, since it uses as much as digits as its factorization.

11439797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19158.

The product of its digits is 47628, while the sum is 41.

The square root of 11439797 is about 3382.2768958203. The cubic root of 11439797 is about 225.3233014822.

The spelling of 11439797 in words is "eleven million, four hundred thirty-nine thousand, seven hundred ninety-seven".