3945386 has 8 divisors (see below), whose sum is σ = 5934180. Its totient is φ = 1967328.

The previous prime is 3945367. The next prime is 3945391. The reversal of 3945386 is 6835493.

It can be written as a sum of positive squares in 2 ways, for example, as 3924361 + 21025 = 1981^2 + 145^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1691 + ... + 3278.

Almost surely, 2^3945386 is an apocalyptic number.

3945386 is a deficient number, since it is larger than the sum of its proper divisors (1988794).

3945386 is a wasteful number, since it uses less digits than its factorization.

3945386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5368.

The product of its digits is 77760, while the sum is 38.

The square root of 3945386 is about 1986.2995745859. The cubic root of 3945386 is about 158.0143393491.

The spelling of 3945386 in words is "three million, nine hundred forty-five thousand, three hundred eighty-six".