3938378 has 8 divisors (see below), whose sum is σ = 6051780. Its totient is φ = 1921120.

The previous prime is 3938371. The next prime is 3938381. The reversal of 3938378 is 8738393.

It can be written as a sum of positive squares in 2 ways, for example, as 3621409 + 316969 = 1903^2 + 563^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (41).

It is not an unprimeable number, because it can be changed into a prime (3938371) 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, 23933 + ... + 24096.

Almost surely, 2^3938378 is an apocalyptic number.

3938378 is a deficient number, since it is larger than the sum of its proper divisors (2113402).

3938378 is a wasteful number, since it uses less digits than its factorization.

3938378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48072.

The product of its digits is 108864, while the sum is 41.

The square root of 3938378 is about 1984.5347061717. The cubic root of 3938378 is about 157.9207261352.

The spelling of 3938378 in words is "three million, nine hundred thirty-eight thousand, three hundred seventy-eight".