3906387 has 20 divisors (see below), whose sum is σ = 6040320. Its totient is φ = 2512944.

The previous prime is 3906373. The next prime is 3906401. The reversal of 3906387 is 7836093.

It is an interprime number because it is at equal distance from previous prime (3906373) and next prime (3906401).

It is not a de Polignac number, because 3906387 - 2⁶ = 3906323 is a prime.

It is an Ulam number.

3906387 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3906307) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1518 + ... + 3180.

It is an arithmetic number, because the mean of its divisors is an integer number (302016).

Almost surely, 2^3906387 is an apocalyptic number.

3906387 is a deficient number, since it is larger than the sum of its proper divisors (2133933).

3906387 is a wasteful number, since it uses less digits than its factorization.

3906387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1704 (or 1695 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 3906387 is about 1976.4581958645. The cubic root of 3906387 is about 157.4919723800.

The spelling of 3906387 in words is "three million, nine hundred six thousand, three hundred eighty-seven".