19962949 has 2 divisors, whose sum is σ = 19962950. Its totient is φ = 19962948.

The previous prime is 19962937. The next prime is 19962973. The reversal of 19962949 is 94926991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18792225 + 1170724 = 4335^2 + 1082^2 .

It is a cyclic number.

It is not a de Polignac number, because 19962949 - 2¹³ = 19954757 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 (19962979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9981474 + 9981475.

It is an arithmetic number, because the mean of its divisors is an integer number (9981475).

Almost surely, 2^19962949 is an apocalyptic number.

It is an amenable number.

19962949 is a deficient number, since it is larger than the sum of its proper divisors (1).

19962949 is an equidigital number, since it uses as much as digits as its factorization.

19962949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 314928, while the sum is 49.

The square root of 19962949 is about 4467.9916069751. The cubic root of 19962949 is about 271.2740382329.

The spelling of 19962949 in words is "nineteen million, nine hundred sixty-two thousand, nine hundred forty-nine".