338390497 has 4 divisors (see below), whose sum is σ = 338511636. Its totient is φ = 338269360.

The previous prime is 338390483. The next prime is 338390509. The reversal of 338390497 is 794093833.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 113870241 + 224520256 = 10671^2 + 14984^2 .

It is a cyclic number.

It is not a de Polignac number, because 338390497 - 2⁷ = 338390369 is a prime.

It is a super-3 number, since 3×338390497³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (338390407) 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, 56278 + ... + 61999.

It is an arithmetic number, because the mean of its divisors is an integer number (84627909).

Almost surely, 2^338390497 is an apocalyptic number.

It is an amenable number.

338390497 is a deficient number, since it is larger than the sum of its proper divisors (121139).

338390497 is a wasteful number, since it uses less digits than its factorization.

338390497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121138.

The product of its (nonzero) digits is 489888, while the sum is 46.

The square root of 338390497 is about 18395.3933635571. The cubic root of 338390497 is about 696.8501311133.

The spelling of 338390497 in words is "three hundred thirty-eight million, three hundred ninety thousand, four hundred ninety-seven".