147943969 has 2 divisors, whose sum is σ = 147943970. Its totient is φ = 147943968.

The previous prime is 147943967. The next prime is 147944003. The reversal of 147943969 is 969349741.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86713344 + 61230625 = 9312^2 + 7825^2 .

It is a cyclic number.

It is not a de Polignac number, because 147943969 - 2¹ = 147943967 is a prime.

It is a super-2 number, since 2×147943969² = 43774835926945922, which contains 22 as substring.

Together with 147943967, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (147943967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73971984 + 73971985.

It is an arithmetic number, because the mean of its divisors is an integer number (73971985).

Almost surely, 2^147943969 is an apocalyptic number.

It is an amenable number.

147943969 is a deficient number, since it is larger than the sum of its proper divisors (1).

147943969 is an equidigital number, since it uses as much as digits as its factorization.

147943969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1469664, while the sum is 52.

The square root of 147943969 is about 12163.2219826821. The cubic root of 147943969 is about 528.8904865836.

The spelling of 147943969 in words is "one hundred forty-seven million, nine hundred forty-three thousand, nine hundred sixty-nine".