338478433 has 4 divisors (see below), whose sum is σ = 338543620. Its totient is φ = 338413248.

The previous prime is 338478403. The next prime is 338478461. The reversal of 338478433 is 334874833.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 334874833 = 7517 ⋅44549.

It can be written as a sum of positive squares in 2 ways, for example, as 272349009 + 66129424 = 16503^2 + 8132^2 .

It is a cyclic number.

It is not a de Polignac number, because 338478433 - 2⁹ = 338477921 is a prime.

It is a super-2 number, since 2×338478433² = 229135299212270978, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 338478433.

It is not an unprimeable number, because it can be changed into a prime (338478403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24060 + ... + 35437.

It is an arithmetic number, because the mean of its divisors is an integer number (84635905).

Almost surely, 2^338478433 is an apocalyptic number.

It is an amenable number.

338478433 is a deficient number, since it is larger than the sum of its proper divisors (65187).

338478433 is an equidigital number, since it uses as much as digits as its factorization.

338478433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65186.

The product of its digits is 580608, while the sum is 43.

The square root of 338478433 is about 18397.7833719174. The cubic root of 338478433 is about 696.9104883105.

The spelling of 338478433 in words is "three hundred thirty-eight million, four hundred seventy-eight thousand, four hundred thirty-three".