355979387 has 2 divisors, whose sum is σ = 355979388. Its totient is φ = 355979386.

The previous prime is 355979381. The next prime is 355979389. The reversal of 355979387 is 783979553.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-355979387 is a prime.

Together with 355979389, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (355979381) 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, 177989693 + 177989694.

It is an arithmetic number, because the mean of its divisors is an integer number (177989694).

Almost surely, 2^355979387 is an apocalyptic number.

355979387 is a deficient number, since it is larger than the sum of its proper divisors (1).

355979387 is an equidigital number, since it uses as much as digits as its factorization.

355979387 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7144200, while the sum is 56.

The square root of 355979387 is about 18867.4160127984. The cubic root of 355979387 is about 708.7204269196.

The spelling of 355979387 in words is "three hundred fifty-five million, nine hundred seventy-nine thousand, three hundred eighty-seven".