111488749 has 4 divisors (see below), whose sum is σ = 112592700. Its totient is φ = 110384800.

The previous prime is 111488719. The next prime is 111488753. The reversal of 111488749 is 947884111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 947884111 = 29 ⋅32685659.

It can be written as a sum of positive squares in 2 ways, for example, as 78057225 + 33431524 = 8835^2 + 5782^2 .

It is a cyclic number.

It is not a de Polignac number, because 111488749 - 2⁷ = 111488621 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 (111488719) 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, 551824 + ... + 552025.

It is an arithmetic number, because the mean of its divisors is an integer number (28148175).

Almost surely, 2^111488749 is an apocalyptic number.

It is an amenable number.

111488749 is a deficient number, since it is larger than the sum of its proper divisors (1103951).

111488749 is a wasteful number, since it uses less digits than its factorization.

111488749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103950.

The product of its digits is 64512, while the sum is 43.

The square root of 111488749 is about 10558.8232772407. The cubic root of 111488749 is about 481.2938889753.

The spelling of 111488749 in words is "one hundred eleven million, four hundred eighty-eight thousand, seven hundred forty-nine".