343958987 has 2 divisors, whose sum is σ = 343958988. Its totient is φ = 343958986.

The previous prime is 343958959. The next prime is 343959013. The reversal of 343958987 is 789859343.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 343958987 - 2¹⁰ = 343957963 is a prime.

It is not a weakly prime, because it can be changed into another prime (343958917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171979493 + 171979494.

It is an arithmetic number, because the mean of its divisors is an integer number (171979494).

Almost surely, 2^343958987 is an apocalyptic number.

343958987 is a deficient number, since it is larger than the sum of its proper divisors (1).

343958987 is an equidigital number, since it uses as much as digits as its factorization.

343958987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6531840, while the sum is 56.

The square root of 343958987 is about 18546.1313216530. The cubic root of 343958987 is about 700.6517650666.

It can be divided in two parts, 3439 and 58987, that added together give a palindrome (62426).

The spelling of 343958987 in words is "three hundred forty-three million, nine hundred fifty-eight thousand, nine hundred eighty-seven".