119718991 has 16 divisors (see below), whose sum is σ = 138682368. Its totient is φ = 101232000.

The previous prime is 119718971. The next prime is 119719003. The reversal of 119718991 is 199817911.

It is a cyclic number.

It is not a de Polignac number, because 119718991 - 2¹⁹ = 119194703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (119718971) 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 15 ways as a sum of consecutive naturals, for example, 201591 + ... + 202183.

It is an arithmetic number, because the mean of its divisors is an integer number (8667648).

Almost surely, 2^119718991 is an apocalyptic number.

119718991 is a deficient number, since it is larger than the sum of its proper divisors (18963377).

119718991 is a wasteful number, since it uses less digits than its factorization.

119718991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942.

The product of its digits is 40824, while the sum is 46.

The square root of 119718991 is about 10941.6173850121. The cubic root of 119718991 is about 492.8570985007.

The spelling of 119718991 in words is "one hundred nineteen million, seven hundred eighteen thousand, nine hundred ninety-one".