111444397 has 2 divisors, whose sum is σ = 111444398. Its totient is φ = 111444396.

The previous prime is 111444371. The next prime is 111444439. The reversal of 111444397 is 793444111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68790436 + 42653961 = 8294^2 + 6531^2 .

It is a cyclic number.

It is not a de Polignac number, because 111444397 - 2¹¹ = 111442349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111444337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55722198 + 55722199.

It is an arithmetic number, because the mean of its divisors is an integer number (55722199).

Almost surely, 2^111444397 is an apocalyptic number.

It is an amenable number.

111444397 is a deficient number, since it is larger than the sum of its proper divisors (1).

111444397 is an equidigital number, since it uses as much as digits as its factorization.

111444397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 34.

The square root of 111444397 is about 10556.7228342891. The cubic root of 111444397 is about 481.2300583855.

The spelling of 111444397 in words is "one hundred eleven million, four hundred forty-four thousand, three hundred ninety-seven".