38688489 has 24 divisors (see below), whose sum is σ = 66676320. Its totient is φ = 22106952.

The previous prime is 38688487. The next prime is 38688491. The reversal of 38688489 is 98488683.

38688489 is a `hidden beast` number, since 3 + 86 + 88 + 489 = 666.

It is an interprime number because it is at equal distance from previous prime (38688487) and next prime (38688491).

It is not a de Polignac number, because 38688489 - 2¹ = 38688487 is a prime.

It is a super-2 number, since 2×38688489² = 2993598362206242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38688487) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13299 + ... + 15944.

It is an arithmetic number, because the mean of its divisors is an integer number (2778180).

Almost surely, 2^38688489 is an apocalyptic number.

It is an amenable number.

38688489 is a deficient number, since it is larger than the sum of its proper divisors (27987831).

38688489 is a wasteful number, since it uses less digits than its factorization.

38688489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29266 (or 29253 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 54.

The square root of 38688489 is about 6220.0071543367. The cubic root of 38688489 is about 338.2158239028.

The spelling of 38688489 in words is "thirty-eight million, six hundred eighty-eight thousand, four hundred eighty-nine".