119621989 has 2 divisors, whose sum is σ = 119621990. Its totient is φ = 119621988.

The previous prime is 119621987. The next prime is 119621993. The reversal of 119621989 is 989126911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116273089 + 3348900 = 10783^2 + 1830^2 .

It is an emirp because it is prime and its reverse (989126911) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 119621989 - 2¹ = 119621987 is a prime.

It is a super-2 number, since 2×119621989² = 28618840504632242, which contains 22 as substring.

Together with 119621987, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (119621987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59810994 + 59810995.

It is an arithmetic number, because the mean of its divisors is an integer number (59810995).

Almost surely, 2^119621989 is an apocalyptic number.

It is an amenable number.

119621989 is a deficient number, since it is larger than the sum of its proper divisors (1).

119621989 is an equidigital number, since it uses as much as digits as its factorization.

119621989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 46.

The square root of 119621989 is about 10937.1837782859. The cubic root of 119621989 is about 492.7239504740.

The spelling of 119621989 in words is "one hundred nineteen million, six hundred twenty-one thousand, nine hundred eighty-nine".