119919978 has 24 divisors (see below), whose sum is σ = 264232800. Its totient is φ = 39295464.

The previous prime is 119919941. The next prime is 119919979. The reversal of 119919978 is 879919911.

It is a happy number.

It is a super-2 number, since 2×119919978² = 28761602247040968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (119919979) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55398 + ... + 57521.

It is an arithmetic number, because the mean of its divisors is an integer number (11009700).

Almost surely, 2^119919978 is an apocalyptic number.

119919978 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

119919978 is an abundant number, since it is smaller than the sum of its proper divisors (144312822).

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

119919978 is a wasteful number, since it uses less digits than its factorization.

119919978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112986 (or 112983 counting only the distinct ones).

The product of its digits is 367416, while the sum is 54.

The square root of 119919978 is about 10950.7980531101. The cubic root of 119919978 is about 493.1327509179.

The spelling of 119919978 in words is "one hundred nineteen million, nine hundred nineteen thousand, nine hundred seventy-eight".