3942687 has 12 divisors (see below), whose sum is σ = 6115416. Its totient is φ = 2252880.

The previous prime is 3942677. The next prime is 3942721. The reversal of 3942687 is 7862493.

It is not a de Polignac number, because 3942687 - 2¹⁶ = 3877151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3942647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13264 + ... + 13557.

It is an arithmetic number, because the mean of its divisors is an integer number (509618).

Almost surely, 2^3942687 is an apocalyptic number.

3942687 is a deficient number, since it is larger than the sum of its proper divisors (2172729).

3942687 is a wasteful number, since it uses less digits than its factorization.

3942687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26838 (or 26831 counting only the distinct ones).

The product of its digits is 72576, while the sum is 39.

The square root of 3942687 is about 1985.6200542903. The cubic root of 3942687 is about 157.9782991079.

It can be divided in two parts, 394 and 2687, that added together give a triangular number (3081 = T₇₈).

The spelling of 3942687 in words is "three million, nine hundred forty-two thousand, six hundred eighty-seven".