338505979 has 4 divisors (see below), whose sum is σ = 386863984. Its totient is φ = 290147976.

The previous prime is 338505967. The next prime is 338505991. The reversal of 338505979 is 979505833.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 979505833 = 373 ⋅2626021.

It is an interprime number because it is at equal distance from previous prime (338505967) and next prime (338505991).

It is a cyclic number.

It is not a de Polignac number, because 338505979 - 2²⁵ = 304951547 is a prime.

It is a super-2 number, since 2×338505979² = 229172595637496882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (338505929) 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, 24178992 + ... + 24179005.

It is an arithmetic number, because the mean of its divisors is an integer number (96715996).

Almost surely, 2^338505979 is an apocalyptic number.

338505979 is a deficient number, since it is larger than the sum of its proper divisors (48358005).

338505979 is an equidigital number, since it uses as much as digits as its factorization.

338505979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48358004.

The product of its (nonzero) digits is 1020600, while the sum is 49.

The square root of 338505979 is about 18398.5319794814. The cubic root of 338505979 is about 696.9293930852.

The spelling of 338505979 in words is "three hundred thirty-eight million, five hundred five thousand, nine hundred seventy-nine".