3905378 has 4 divisors (see below), whose sum is σ = 5858070. Its totient is φ = 1952688.

The previous prime is 3905357. The next prime is 3905383. The reversal of 3905378 is 8735093.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8735093 = 17 ⋅513829.

It can be written as a sum of positive squares in only one way, i.e., 2505889 + 1399489 = 1583^2 + 1183^2 .

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, 976343 + ... + 976346.

Almost surely, 2^3905378 is an apocalyptic number.

3905378 is a deficient number, since it is larger than the sum of its proper divisors (1952692).

3905378 is a wasteful number, since it uses less digits than its factorization.

3905378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1952691.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 3905378 is about 1976.2029248030. The cubic root of 3905378 is about 157.4784114191.

The spelling of 3905378 in words is "three million, nine hundred five thousand, three hundred seventy-eight".