2148947 has 2 divisors, whose sum is σ = 2148948. Its totient is φ = 2148946.

The previous prime is 2148907. The next prime is 2148983. The reversal of 2148947 is 7498412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2148947 - 2¹⁰ = 2147923 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2148907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1074473 + 1074474.

It is an arithmetic number, because the mean of its divisors is an integer number (1074474).

2^2148947 is an apocalyptic number.

2148947 is a deficient number, since it is larger than the sum of its proper divisors (1).

2148947 is an equidigital number, since it uses as much as digits as its factorization.

2148947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16128, while the sum is 35.

The square root of 2148947 is about 1465.9287158658. The cubic root of 2148947 is about 129.0452138046.

The spelling of 2148947 in words is "two million, one hundred forty-eight thousand, nine hundred forty-seven".