340400404 has 6 divisors (see below), whose sum is σ = 595700714. Its totient is φ = 170200200.

The previous prime is 340400393. The next prime is 340400413. The reversal of 340400404 is 404004043.

It can be written as a sum of positive squares in only one way, i.e., 214915600 + 125484804 = 14660^2 + 11202^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42550047 + ... + 42550054.

Almost surely, 2^340400404 is an apocalyptic number.

It is an amenable number.

340400404 is a deficient number, since it is larger than the sum of its proper divisors (255300310).

340400404 is a wasteful number, since it uses less digits than its factorization.

340400404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85100105 (or 85100103 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 340400404 is about 18449.9431977445. The cubic root of 340400404 is about 698.2270807914.

Adding to 340400404 its reverse (404004043), we get a palindrome (744404447).

The spelling of 340400404 in words is "three hundred forty million, four hundred thousand, four hundred four".