338993477 has 2 divisors, whose sum is σ = 338993478. Its totient is φ = 338993476.

The previous prime is 338993443. The next prime is 338993483. The reversal of 338993477 is 774399833.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 335585761 + 3407716 = 18319^2 + 1846^2 .

It is a cyclic number.

It is not a de Polignac number, because 338993477 - 2¹⁸ = 338731333 is a prime.

It is a super-2 number, since 2×338993477² = 229833154897099058, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (338993177) 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 as a sum of consecutive naturals, namely, 169496738 + 169496739.

It is an arithmetic number, because the mean of its divisors is an integer number (169496739).

Almost surely, 2^338993477 is an apocalyptic number.

It is an amenable number.

338993477 is a deficient number, since it is larger than the sum of its proper divisors (1).

338993477 is an equidigital number, since it uses as much as digits as its factorization.

338993477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3429216, while the sum is 53.

The square root of 338993477 is about 18411.7754983054. The cubic root of 338993477 is about 697.2637926127.

The spelling of 338993477 in words is "three hundred thirty-eight million, nine hundred ninety-three thousand, four hundred seventy-seven".