11149997 has 4 divisors (see below), whose sum is σ = 11339040. Its totient is φ = 10960956.

The previous prime is 11149973. The next prime is 11150021. The reversal of 11149997 is 79994111.

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: 79994111 = 37 ⋅2162003.

It is an interprime number because it is at equal distance from previous prime (11149973) and next prime (11150021).

It is a cyclic number.

It is not a de Polignac number, because 11149997 - 2¹⁸ = 10887853 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 (11149927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94433 + ... + 94550.

It is an arithmetic number, because the mean of its divisors is an integer number (2834760).

Almost surely, 2^11149997 is an apocalyptic number.

It is an amenable number.

11149997 is a deficient number, since it is larger than the sum of its proper divisors (189043).

11149997 is an equidigital number, since it uses as much as digits as its factorization.

11149997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189042.

The product of its digits is 20412, while the sum is 41.

The square root of 11149997 is about 3339.1611221982. The cubic root of 11149997 is about 223.4043285589.

It can be divided in two parts, 1114 and 9997, that added together give a palindrome (11111).

The spelling of 11149997 in words is "eleven million, one hundred forty-nine thousand, nine hundred ninety-seven".