4009378 has 8 divisors (see below), whose sum is σ = 6072768. Its totient is φ = 1985124.

The previous prime is 4009373. The next prime is 4009381. The reversal of 4009378 is 8739004.

It is a happy number.

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

It is a super-2 number, since 2×4009378² = 32150223893768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4009373) 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, 9526 + ... + 9937.

It is an arithmetic number, because the mean of its divisors is an integer number (759096).

Almost surely, 2^4009378 is an apocalyptic number.

4009378 is a deficient number, since it is larger than the sum of its proper divisors (2063390).

4009378 is a wasteful number, since it uses less digits than its factorization.

4009378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19568.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 4009378 is about 2002.3431274385. The cubic root of 4009378 is about 158.8640637658.

The spelling of 4009378 in words is "four million, nine thousand, three hundred seventy-eight".