353400449 has 4 divisors (see below), whose sum is σ = 360068436. Its totient is φ = 346732464.

The previous prime is 353400433. The next prime is 353400461. The reversal of 353400449 is 944004353.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 944004353 = 47 ⋅20085199.

It can be written as a sum of positive squares in 2 ways, for example, as 215502400 + 137898049 = 14680^2 + 11743^2 .

It is a cyclic number.

It is not a de Polignac number, because 353400449 - 2⁴ = 353400433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (353400419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3333914 + ... + 3334019.

It is an arithmetic number, because the mean of its divisors is an integer number (90017109).

Almost surely, 2^353400449 is an apocalyptic number.

It is an amenable number.

353400449 is a deficient number, since it is larger than the sum of its proper divisors (6667987).

353400449 is an equidigital number, since it uses as much as digits as its factorization.

353400449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6667986.

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 353400449 is about 18798.9480822731. The cubic root of 353400449 is about 707.0048054186.

The spelling of 353400449 in words is "three hundred fifty-three million, four hundred thousand, four hundred forty-nine".