113969721 has 8 divisors (see below), whose sum is σ = 152398944. Its totient is φ = 75760160.

The previous prime is 113969701. The next prime is 113969729. The reversal of 113969721 is 127969311.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 113969721 - 2⁷ = 113969593 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 113969721.

It is not an unprimeable number, because it can be changed into a prime (113969729) 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 7 ways as a sum of consecutive naturals, for example, 53700 + ... + 55781.

It is an arithmetic number, because the mean of its divisors is an integer number (19049868).

Almost surely, 2^113969721 is an apocalyptic number.

It is an amenable number.

113969721 is a deficient number, since it is larger than the sum of its proper divisors (38429223).

113969721 is a wasteful number, since it uses less digits than its factorization.

113969721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109831.

The product of its digits is 20412, while the sum is 39.

The square root of 113969721 is about 10675.6602137760. The cubic root of 113969721 is about 484.8378258222.

The spelling of 113969721 in words is "one hundred thirteen million, nine hundred sixty-nine thousand, seven hundred twenty-one".