119949821 has 2 divisors, whose sum is σ = 119949822. Its totient is φ = 119949820.

The previous prime is 119949811. The next prime is 119949883. The reversal of 119949821 is 128949911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118156900 + 1792921 = 10870^2 + 1339^2 .

It is a cyclic number.

It is not a de Polignac number, because 119949821 - 2¹⁰ = 119948797 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (119949811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59974910 + 59974911.

It is an arithmetic number, because the mean of its divisors is an integer number (59974911).

Almost surely, 2^119949821 is an apocalyptic number.

It is an amenable number.

119949821 is a deficient number, since it is larger than the sum of its proper divisors (1).

119949821 is an equidigital number, since it uses as much as digits as its factorization.

119949821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 44.

The square root of 119949821 is about 10952.1605631035. The cubic root of 119949821 is about 493.1736541389.

The spelling of 119949821 in words is "one hundred nineteen million, nine hundred forty-nine thousand, eight hundred twenty-one".