119655990 has 48 divisors (see below), whose sum is σ = 312629616. Its totient is φ = 31752000.

The previous prime is 119655989. The next prime is 119655997. The reversal of 119655990 is 99556911.

It is a happy number.

119655990 is a `hidden beast` number, since 1 + 1 + 9 + 6 + 559 + 90 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (119655997) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15840 + ... + 22140.

It is an arithmetic number, because the mean of its divisors is an integer number (6513117).

Almost surely, 2^119655990 is an apocalyptic number.

119655990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 119655990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156314808).

119655990 is an abundant number, since it is smaller than the sum of its proper divisors (192973626).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

119655990 is a wasteful number, since it uses less digits than its factorization.

119655990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6525 (or 6522 counting only the distinct ones).

The product of its (nonzero) digits is 109350, while the sum is 45.

The square root of 119655990 is about 10938.7380442170. The cubic root of 119655990 is about 492.7706295173.

It can be divided in two parts, 11965 and 5990, that added together give a triangular number (17955 = T₁₈₉).

The spelling of 119655990 in words is "one hundred nineteen million, six hundred fifty-five thousand, nine hundred ninety".