4878149 has 2 divisors, whose sum is σ = 4878150. Its totient is φ = 4878148.

The previous prime is 4878121. The next prime is 4878151. The reversal of 4878149 is 9418784.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3265249 + 1612900 = 1807^2 + 1270^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4878149 is a prime.

Together with 4878151, 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 (4871149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2439074 + 2439075.

It is an arithmetic number, because the mean of its divisors is an integer number (2439075).

Almost surely, 2^4878149 is an apocalyptic number.

It is an amenable number.

4878149 is a deficient number, since it is larger than the sum of its proper divisors (1).

4878149 is an equidigital number, since it uses as much as digits as its factorization.

4878149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64512, while the sum is 41.

The square root of 4878149 is about 2208.6532095374. The cubic root of 4878149 is about 169.5970734372.

The spelling of 4878149 in words is "four million, eight hundred seventy-eight thousand, one hundred forty-nine".