3954378 has 8 divisors (see below), whose sum is σ = 7908768. Its totient is φ = 1318124.

The previous prime is 3954373. The next prime is 3954397. The reversal of 3954378 is 8734593.

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

3954378 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (3954371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 329526 + ... + 329537.

It is an arithmetic number, because the mean of its divisors is an integer number (988596).

Almost surely, 2^3954378 is an apocalyptic number.

3954378 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3954378 is a wasteful number, since it uses less digits than its factorization.

3954378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659068.

The product of its digits is 90720, while the sum is 39.

The square root of 3954378 is about 1988.5617918486. The cubic root of 3954378 is about 158.1342927043.

It can be divided in two parts, 39543 and 78, that added together give a triangular number (39621 = T₂₈₁).

The spelling of 3954378 in words is "three million, nine hundred fifty-four thousand, three hundred seventy-eight".