343239440 has 40 divisors (see below), whose sum is σ = 823780608. Its totient is φ = 132865920.

The previous prime is 343239433. The next prime is 343239517. The reversal of 343239440 is 44932343.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 343239397 and 343239406.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66722 + ... + 71681.

Almost surely, 2^343239440 is an apocalyptic number.

It is an amenable number.

343239440 is an abundant number, since it is smaller than the sum of its proper divisors (480541168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

343239440 is a wasteful number, since it uses less digits than its factorization.

343239440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138447 (or 138441 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 32.

The square root of 343239440 is about 18526.7223220946. The cubic root of 343239440 is about 700.1628464666.

The spelling of 343239440 in words is "three hundred forty-three million, two hundred thirty-nine thousand, four hundred forty".