3931487 has 8 divisors (see below), whose sum is σ = 4578336. Its totient is φ = 3305952.

The previous prime is 3931481. The next prime is 3931517. The reversal of 3931487 is 7841393.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3931487 - 2⁸ = 3931231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3931481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4928 + ... + 5669.

It is an arithmetic number, because the mean of its divisors is an integer number (572292).

Almost surely, 2^3931487 is an apocalyptic number.

3931487 is a deficient number, since it is larger than the sum of its proper divisors (646849).

3931487 is a wasteful number, since it uses less digits than its factorization.

3931487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10657.

The product of its digits is 18144, while the sum is 35.

The square root of 3931487 is about 1982.7977708279. The cubic root of 3931487 is about 157.8285674651.

The spelling of 3931487 in words is "three million, nine hundred thirty-one thousand, four hundred eighty-seven".