3956378 has 4 divisors (see below), whose sum is σ = 5934570. Its totient is φ = 1978188.

The previous prime is 3956353. The next prime is 3956401. The reversal of 3956378 is 8736593.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3713329 + 243049 = 1927^2 + 493^2 .

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 989093 + ... + 989096.

Almost surely, 2^3956378 is an apocalyptic number.

3956378 is a deficient number, since it is larger than the sum of its proper divisors (1978192).

3956378 is a wasteful number, since it uses less digits than its factorization.

3956378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1978191.

The product of its digits is 136080, while the sum is 41.

The square root of 3956378 is about 1989.0646042801. The cubic root of 3956378 is about 158.1609479946.

It can be divided in two parts, 3956 and 378, that added together give a palindrome (4334).

The spelling of 3956378 in words is "three million, nine hundred fifty-six thousand, three hundred seventy-eight".