38087987 has 4 divisors (see below), whose sum is σ = 43529136. Its totient is φ = 32646840.

The previous prime is 38087983. The next prime is 38088097. The reversal of 38087987 is 78978083.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78978083 = 181 ⋅436343.

It is a cyclic number.

It is not a de Polignac number, because 38087987 - 2² = 38087983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38087983) 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, 2720564 + ... + 2720577.

It is an arithmetic number, because the mean of its divisors is an integer number (10882284).

Almost surely, 2^38087987 is an apocalyptic number.

38087987 is a deficient number, since it is larger than the sum of its proper divisors (5441149).

38087987 is an equidigital number, since it uses as much as digits as its factorization.

38087987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5441148.

The product of its (nonzero) digits is 677376, while the sum is 50.

The square root of 38087987 is about 6171.5465646789. The cubic root of 38087987 is about 336.4568232347.

The spelling of 38087987 in words is "thirty-eight million, eighty-seven thousand, nine hundred eighty-seven".