38998361 has 2 divisors, whose sum is σ = 38998362. Its totient is φ = 38998360.

The previous prime is 38998343. The next prime is 38998367. The reversal of 38998361 is 16389983.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35331136 + 3667225 = 5944^2 + 1915^2 .

It is an emirp because it is prime and its reverse (16389983) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38998361 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (38998367) 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, 19499180 + 19499181.

It is an arithmetic number, because the mean of its divisors is an integer number (19499181).

Almost surely, 2^38998361 is an apocalyptic number.

It is an amenable number.

38998361 is a deficient number, since it is larger than the sum of its proper divisors (1).

38998361 is an equidigital number, since it uses as much as digits as its factorization.

38998361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 279936, while the sum is 47.

The square root of 38998361 is about 6244.8667719976. The cubic root of 38998361 is about 339.1163936404.

The spelling of 38998361 in words is "thirty-eight million, nine hundred ninety-eight thousand, three hundred sixty-one".