148438949 has 2 divisors, whose sum is σ = 148438950. Its totient is φ = 148438948.

The previous prime is 148438933. The next prime is 148438957. The reversal of 148438949 is 949834841.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93412225 + 55026724 = 9665^2 + 7418^2 .

It is a cyclic number.

It is not a de Polignac number, because 148438949 - 2⁴ = 148438933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 148438897 and 148438906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (148438999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74219474 + 74219475.

It is an arithmetic number, because the mean of its divisors is an integer number (74219475).

Almost surely, 2^148438949 is an apocalyptic number.

It is an amenable number.

148438949 is a deficient number, since it is larger than the sum of its proper divisors (1).

148438949 is an equidigital number, since it uses as much as digits as its factorization.

148438949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 995328, while the sum is 50.

The square root of 148438949 is about 12183.5523965714. The cubic root of 148438949 is about 529.4796708918.

The spelling of 148438949 in words is "one hundred forty-eight million, four hundred thirty-eight thousand, nine hundred forty-nine".