338520977 has 2 divisors, whose sum is σ = 338520978. Its totient is φ = 338520976.

The previous prime is 338520953. The next prime is 338520989. The reversal of 338520977 is 779025833.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 198359056 + 140161921 = 14084^2 + 11839^2 .

It is a cyclic number.

It is not a de Polignac number, because 338520977 - 2²² = 334326673 is a prime.

It is a super-2 number, since 2×338520977² = 229192903738069058, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (338520947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169260488 + 169260489.

It is an arithmetic number, because the mean of its divisors is an integer number (169260489).

Almost surely, 2^338520977 is an apocalyptic number.

It is an amenable number.

338520977 is a deficient number, since it is larger than the sum of its proper divisors (1).

338520977 is an equidigital number, since it uses as much as digits as its factorization.

338520977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 317520, while the sum is 44.

The square root of 338520977 is about 18398.9395618334. The cubic root of 338520977 is about 696.9396857569.

The spelling of 338520977 in words is "three hundred thirty-eight million, five hundred twenty thousand, nine hundred seventy-seven".