39487 has 4 divisors (see below), whose sum is σ = 45136. Its totient is φ = 33840.

The previous prime is 39461. The next prime is 39499. The reversal of 39487 is 78493.

39487 = T₆₈ + T₆₉ + ... + T₈₁.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78493 = 53 ⋅1481.

It is a cyclic number.

It is not a de Polignac number, because 39487 - 2⁷ = 39359 is a prime.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2814 + ... + 2827.

It is an arithmetic number, because the mean of its divisors is an integer number (11284).

2³⁹⁴⁸⁷ is an apocalyptic number.

39487 is a deficient number, since it is larger than the sum of its proper divisors (5649).

39487 is an equidigital number, since it uses as much as digits as its factorization.

39487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5648.

The product of its digits is 6048, while the sum is 31.

The square root of 39487 is about 198.7133614028. The cubic root of 39487 is about 34.0526864808.

The spelling of 39487 in words is "thirty-nine thousand, four hundred eighty-seven".