147949 has 2 divisors, whose sum is σ = 147950. Its totient is φ = 147948.

The previous prime is 147937. The next prime is 147977. The reversal of 147949 is 949741.

147949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 145924 + 2025 = 382^2 + 45^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-147949 is a prime.

It is an Ulam number.

147949 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (147919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73974 + 73975.

It is an arithmetic number, because the mean of its divisors is an integer number (73975).

2¹⁴⁷⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

147949 is a deficient number, since it is larger than the sum of its proper divisors (1).

147949 is an equidigital number, since it uses as much as digits as its factorization.

147949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 34.

The square root of 147949 is about 384.6413914284. The cubic root of 147949 is about 52.8896481686.

The spelling of 147949 in words is "one hundred forty-seven thousand, nine hundred forty-nine".