118989427 has 2 divisors, whose sum is σ = 118989428. Its totient is φ = 118989426.

The previous prime is 118989401. The next prime is 118989433. The reversal of 118989427 is 724989811.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118989427 is a prime.

It is not a weakly prime, because it can be changed into another prime (118980427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59494713 + 59494714.

It is an arithmetic number, because the mean of its divisors is an integer number (59494714).

Almost surely, 2^118989427 is an apocalyptic number.

118989427 is a deficient number, since it is larger than the sum of its proper divisors (1).

118989427 is an equidigital number, since it uses as much as digits as its factorization.

118989427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 290304, while the sum is 49.

The square root of 118989427 is about 10908.2274912105. The cubic root of 118989427 is about 491.8539057165.

The spelling of 118989427 in words is "one hundred eighteen million, nine hundred eighty-nine thousand, four hundred twenty-seven".