119660991 has 8 divisors (see below), whose sum is σ = 159736320. Its totient is φ = 79679832.

The previous prime is 119660951. The next prime is 119661029. The reversal of 119660991 is 199066911.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 119660991 - 2²³ = 111272383 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (119660911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20521 + ... + 25698.

It is an arithmetic number, because the mean of its divisors is an integer number (19967040).

Almost surely, 2^119660991 is an apocalyptic number.

119660991 is a deficient number, since it is larger than the sum of its proper divisors (40075329).

119660991 is an equidigital number, since it uses as much as digits as its factorization.

119660991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47085.

The product of its (nonzero) digits is 26244, while the sum is 42.

The square root of 119660991 is about 10938.9666330966. The cubic root of 119660991 is about 492.7774945075. Note that the first 3 decimals are identical.

The spelling of 119660991 in words is "one hundred nineteen million, six hundred sixty thousand, nine hundred ninety-one".