3905487 has 6 divisors (see below), whose sum is σ = 5641272. Its totient is φ = 2603652.

The previous prime is 3905477. The next prime is 3905491. The reversal of 3905487 is 7845093.

It is not a de Polignac number, because 3905487 - 2⁴ = 3905471 is a prime.

3905487 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3905417) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 216963 + ... + 216980.

It is an arithmetic number, because the mean of its divisors is an integer number (940212).

Almost surely, 2^3905487 is an apocalyptic number.

3905487 is a deficient number, since it is larger than the sum of its proper divisors (1735785).

3905487 is a wasteful number, since it uses less digits than its factorization.

3905487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433949 (or 433946 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 3905487 is about 1976.2305027501. The cubic root of 3905487 is about 157.4798764917.

The spelling of 3905487 in words is "three million, nine hundred five thousand, four hundred eighty-seven".