12002987 has 4 divisors (see below), whose sum is σ = 12524880. Its totient is φ = 11481096.

The previous prime is 12002959. The next prime is 12002989. The reversal of 12002987 is 78920021.

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: 78920021 = 53 ⋅1489057.

It is a cyclic number.

It is not a de Polignac number, because 12002987 - 2¹⁰ = 12001963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12002989) 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, 260912 + ... + 260957.

It is an arithmetic number, because the mean of its divisors is an integer number (3131220).

Almost surely, 2^12002987 is an apocalyptic number.

12002987 is a deficient number, since it is larger than the sum of its proper divisors (521893).

12002987 is an equidigital number, since it uses as much as digits as its factorization.

12002987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521892.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 12002987 is about 3464.5327246254. The cubic root of 12002987 is about 228.9618428317.

The spelling of 12002987 in words is "twelve million, two thousand, nine hundred eighty-seven".