38821489 has 16 divisors (see below), whose sum is σ = 47409408. Its totient is φ = 31030272.

The previous prime is 38821477. The next prime is 38821501. The reversal of 38821489 is 98412883.

It is an interprime number because it is at equal distance from previous prime (38821477) and next prime (38821501).

It is not a de Polignac number, because 38821489 - 2⁷ = 38821361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38821429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12004 + ... + 14890.

It is an arithmetic number, because the mean of its divisors is an integer number (2963088).

Almost surely, 2^38821489 is an apocalyptic number.

It is an amenable number.

38821489 is a deficient number, since it is larger than the sum of its proper divisors (8587919).

38821489 is a wasteful number, since it uses less digits than its factorization.

38821489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3024.

The product of its digits is 110592, while the sum is 43.

The square root of 38821489 is about 6230.6892877113. The cubic root of 38821489 is about 338.6029438452.

The spelling of 38821489 in words is "thirty-eight million, eight hundred twenty-one thousand, four hundred eighty-nine".