2908987 has 4 divisors (see below), whose sum is σ = 2921920. Its totient is φ = 2896056.

The previous prime is 2908981. The next prime is 2908999. The reversal of 2908987 is 7898092.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2908987 - 2³ = 2908979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2908981) 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, 6123 + ... + 6580.

It is an arithmetic number, because the mean of its divisors is an integer number (730480).

2^2908987 is an apocalyptic number.

2908987 is a deficient number, since it is larger than the sum of its proper divisors (12933).

2908987 is a wasteful number, since it uses less digits than its factorization.

2908987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12932.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 2908987 is about 1705.5752695205. The cubic root of 2908987 is about 142.7514714255.

The spelling of 2908987 in words is "two million, nine hundred eight thousand, nine hundred eighty-seven".