119387991 has 16 divisors (see below), whose sum is σ = 170926848. Its totient is φ = 73852800.

The previous prime is 119387977. The next prime is 119387993. The reversal of 119387991 is 199783911.

It is a happy number.

It is not a de Polignac number, because 119387991 - 2¹¹ = 119385943 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 119387991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (119387993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12865 + ... + 20106.

It is an arithmetic number, because the mean of its divisors is an integer number (10682928).

Almost surely, 2^119387991 is an apocalyptic number.

119387991 is a deficient number, since it is larger than the sum of its proper divisors (51538857).

119387991 is a wasteful number, since it uses less digits than its factorization.

119387991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33062.

The product of its digits is 122472, while the sum is 48.

The square root of 119387991 is about 10926.4811810573. The cubic root of 119387991 is about 492.4024608645.

The spelling of 119387991 in words is "one hundred nineteen million, three hundred eighty-seven thousand, nine hundred ninety-one".