113249999 has 4 divisors (see below), whose sum is σ = 118173936. Its totient is φ = 108326064.

The previous prime is 113249993. The next prime is 113250001. The reversal of 113249999 is 999942311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 999942311 = 113 ⋅8849047.

It is a cyclic number.

It is not a de Polignac number, because 113249999 - 2¹² = 113245903 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 (113249993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2461934 + ... + 2461979.

It is an arithmetic number, because the mean of its divisors is an integer number (29543484).

Almost surely, 2^113249999 is an apocalyptic number.

113249999 is a deficient number, since it is larger than the sum of its proper divisors (4923937).

113249999 is an equidigital number, since it uses as much as digits as its factorization.

113249999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4923936.

The product of its digits is 157464, while the sum is 47.

The square root of 113249999 is about 10641.8982799123. The cubic root of 113249999 is about 483.8150817276.

It can be divided in two parts, 11324 and 9999, that multiplied together give a triangular number (113228676 = T₁₅₀₄₈).

The spelling of 113249999 in words is "one hundred thirteen million, two hundred forty-nine thousand, nine hundred ninety-nine".