353408399 has 4 divisors (see below), whose sum is σ = 360076536. Its totient is φ = 346740264.

The previous prime is 353408389. The next prime is 353408453. The reversal of 353408399 is 993804353.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 993804353 = 229 ⋅4339757.

It is a cyclic number.

It is not a de Polignac number, because 353408399 - 2⁴ = 353408383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (353408329) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3333989 + ... + 3334094.

It is an arithmetic number, because the mean of its divisors is an integer number (90019134).

Almost surely, 2^353408399 is an apocalyptic number.

353408399 is a deficient number, since it is larger than the sum of its proper divisors (6668137).

353408399 is an equidigital number, since it uses as much as digits as its factorization.

353408399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6668136.

The product of its (nonzero) digits is 349920, while the sum is 44.

The square root of 353408399 is about 18799.1595290853. The cubic root of 353408399 is about 707.0101069078.

The spelling of 353408399 in words is "three hundred fifty-three million, four hundred eight thousand, three hundred ninety-nine".