119968991 has 2 divisors, whose sum is σ = 119968992. Its totient is φ = 119968990.

The previous prime is 119968963. The next prime is 119968999. The reversal of 119968991 is 199869911.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 119968991 - 2¹⁴ = 119952607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (119968999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59984495 + 59984496.

It is an arithmetic number, because the mean of its divisors is an integer number (59984496).

Almost surely, 2^119968991 is an apocalyptic number.

119968991 is a deficient number, since it is larger than the sum of its proper divisors (1).

119968991 is an equidigital number, since it uses as much as digits as its factorization.

119968991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 314928, while the sum is 53.

The square root of 119968991 is about 10953.0356979241. The cubic root of 119968991 is about 493.1999252225.

The spelling of 119968991 in words is "one hundred nineteen million, nine hundred sixty-eight thousand, nine hundred ninety-one".