343400408 has 64 divisors (see below), whose sum is σ = 751433760. Its totient is φ = 145668096.

The previous prime is 343400389. The next prime is 343400417. The reversal of 343400408 is 804004343.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73766 + ... + 78282.

Almost surely, 2^343400408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 343400408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (375716880).

343400408 is an abundant number, since it is smaller than the sum of its proper divisors (408033352).

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

343400408 is a wasteful number, since it uses less digits than its factorization.

343400408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4596 (or 4592 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 343400408 is about 18531.0660243819. The cubic root of 343400408 is about 700.2722804713.

The spelling of 343400408 in words is "three hundred forty-three million, four hundred thousand, four hundred eight".