2133949 has 2 divisors, whose sum is σ = 2133950. Its totient is φ = 2133948.

The previous prime is 2133899. The next prime is 2133973. The reversal of 2133949 is 9493312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1876900 + 257049 = 1370^2 + 507^2 .

It is a cyclic number.

It is not a de Polignac number, because 2133949 - 2⁷ = 2133821 is a prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 2²¹ + 1 + 3⁸ + 3⁸ + 9³ + 4⁷ + 9⁴ .

It is a self number, because there is not a number n which added to its sum of digits gives 2133949.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2133049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1066974 + 1066975.

It is an arithmetic number, because the mean of its divisors is an integer number (1066975).

2^2133949 is an apocalyptic number.

It is an amenable number.

2133949 is a deficient number, since it is larger than the sum of its proper divisors (1).

2133949 is an equidigital number, since it uses as much as digits as its factorization.

2133949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5832, while the sum is 31.

The square root of 2133949 is about 1460.8042305525. The cubic root of 2133949 is about 128.7443004986.

The spelling of 2133949 in words is "two million, one hundred thirty-three thousand, nine hundred forty-nine".