3954686 has 4 divisors (see below), whose sum is σ = 5932032. Its totient is φ = 1977342.

The previous prime is 3954683. The next prime is 3954697. The reversal of 3954686 is 6864593.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6864593 = 97 ⋅70769.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3954683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 988670 + ... + 988673.

It is an arithmetic number, because the mean of its divisors is an integer number (1483008).

Almost surely, 2^3954686 is an apocalyptic number.

3954686 is a deficient number, since it is larger than the sum of its proper divisors (1977346).

3954686 is a wasteful number, since it uses less digits than its factorization.

3954686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1977345.

The product of its digits is 155520, while the sum is 41.

The square root of 3954686 is about 1988.6392332447. The cubic root of 3954686 is about 158.1383982044.

The spelling of 3954686 in words is "three million, nine hundred fifty-four thousand, six hundred eighty-six".