38869489 has 2 divisors, whose sum is σ = 38869490. Its totient is φ = 38869488.

The previous prime is 38869487. The next prime is 38869513. The reversal of 38869489 is 98496883.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38229489 + 640000 = 6183^2 + 800^2 .

It is a cyclic number.

It is not a de Polignac number, because 38869489 - 2¹ = 38869487 is a prime.

It is a super-2 number, since 2×38869489² = 3021674350242242, which contains 22 as substring.

Together with 38869487, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (38869487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19434744 + 19434745.

It is an arithmetic number, because the mean of its divisors is an integer number (19434745).

Almost surely, 2^38869489 is an apocalyptic number.

It is an amenable number.

38869489 is a deficient number, since it is larger than the sum of its proper divisors (1).

38869489 is an equidigital number, since it uses as much as digits as its factorization.

38869489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2985984, while the sum is 55.

The square root of 38869489 is about 6234.5399990697. The cubic root of 38869489 is about 338.7424391590.

The spelling of 38869489 in words is "thirty-eight million, eight hundred sixty-nine thousand, four hundred eighty-nine".