343408989 has 64 divisors (see below), whose sum is σ = 592220160. Its totient is φ = 171840000.

The previous prime is 343408987. The next prime is 343408997. The reversal of 343408989 is 989804343.

It is not a de Polignac number, because 343408989 - 2¹ = 343408987 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343408987) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 956392 + ... + 956750.

It is an arithmetic number, because the mean of its divisors is an integer number (9253440).

Almost surely, 2^343408989 is an apocalyptic number.

It is an amenable number.

343408989 is a deficient number, since it is larger than the sum of its proper divisors (248811171).

343408989 is a wasteful number, since it uses less digits than its factorization.

343408989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522.

The product of its (nonzero) digits is 746496, while the sum is 48.

The square root of 343408989 is about 18531.2975530587. The cubic root of 343408989 is about 700.2781132992.

The spelling of 343408989 in words is "three hundred forty-three million, four hundred eight thousand, nine hundred eighty-nine".