93898381 has 2 divisors, whose sum is σ = 93898382. Its totient is φ = 93898380.

The previous prime is 93898379. The next prime is 93898421. The reversal of 93898381 is 18389839.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93026025 + 872356 = 9645^2 + 934^2 .

It is a cyclic number.

It is not a de Polignac number, because 93898381 - 2¹ = 93898379 is a prime.

It is a super-2 number, since 2×93898381² = 17633811908842322, which contains 22 as substring.

Together with 93898379, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (93898681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 46949190 + 46949191.

It is an arithmetic number, because the mean of its divisors is an integer number (46949191).

Almost surely, 2^93898381 is an apocalyptic number.

It is an amenable number.

93898381 is a deficient number, since it is larger than the sum of its proper divisors (1).

93898381 is an equidigital number, since it uses as much as digits as its factorization.

93898381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 373248, while the sum is 49.

The square root of 93898381 is about 9690.1176979436. The cubic root of 93898381 is about 454.5196895832.

It can be divided in two parts, 9389838 and 1, that added together give a palindrome (9389839).

The spelling of 93898381 in words is "ninety-three million, eight hundred ninety-eight thousand, three hundred eighty-one".