147986957 has 2 divisors, whose sum is σ = 147986958. Its totient is φ = 147986956.

The previous prime is 147986941. The next prime is 147986959. The reversal of 147986957 is 759689741.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109286116 + 38700841 = 10454^2 + 6221^2 .

It is a cyclic number.

It is not a de Polignac number, because 147986957 - 2⁴ = 147986941 is a prime.

Together with 147986959, 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 (147986959) 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, 73993478 + 73993479.

It is an arithmetic number, because the mean of its divisors is an integer number (73993479).

Almost surely, 2^147986957 is an apocalyptic number.

It is an amenable number.

147986957 is a deficient number, since it is larger than the sum of its proper divisors (1).

147986957 is an equidigital number, since it uses as much as digits as its factorization.

147986957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3810240, while the sum is 56.

The square root of 147986957 is about 12164.9889847875. The cubic root of 147986957 is about 528.9417080981.

The spelling of 147986957 in words is "one hundred forty-seven million, nine hundred eighty-six thousand, nine hundred fifty-seven".