4000378 has 8 divisors (see below), whose sum is σ = 6012468. Its totient is φ = 1996224.

The previous prime is 4000361. The next prime is 4000379. The reversal of 4000378 is 8730004.

It can be written as a sum of positive squares in 2 ways, for example, as 3396649 + 603729 = 1843^2 + 777^2 .

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

4000378 is a modest number, since divided by 378 gives 4 as remainder.

It is not an unprimeable number, because it can be changed into a prime (4000379) 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, 501 + ... + 2872.

Almost surely, 2^4000378 is an apocalyptic number.

4000378 is a deficient number, since it is larger than the sum of its proper divisors (2012090).

4000378 is a wasteful number, since it uses less digits than its factorization.

4000378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3968.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 4000378 is about 2000.0944977675. The cubic root of 4000378 is about 158.7451053526.

The spelling of 4000378 in words is "four million, three hundred seventy-eight", and thus it is an aban number.