111961459 has 2 divisors, whose sum is σ = 111961460. Its totient is φ = 111961458.

The previous prime is 111961441. The next prime is 111961463. The reversal of 111961459 is 954169111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111961459 - 2⁵ = 111961427 is a prime.

It is not a weakly prime, because it can be changed into another prime (111961159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55980729 + 55980730.

It is an arithmetic number, because the mean of its divisors is an integer number (55980730).

Almost surely, 2^111961459 is an apocalyptic number.

111961459 is a deficient number, since it is larger than the sum of its proper divisors (1).

111961459 is an equidigital number, since it uses as much as digits as its factorization.

111961459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9720, while the sum is 37.

The square root of 111961459 is about 10581.1841964877. The cubic root of 111961459 is about 481.9731552458.

The spelling of 111961459 in words is "one hundred eleven million, nine hundred sixty-one thousand, four hundred fifty-nine".