4038391 has 8 divisors (see below), whose sum is σ = 4631040. Its totient is φ = 3449688.

The previous prime is 4038379. The next prime is 4038403. The reversal of 4038391 is 1938304.

It is an interprime number because it is at equal distance from previous prime (4038379) and next prime (4038403).

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

It is a cyclic number.

It is not a de Polignac number, because 4038391 - 2¹³ = 4030199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4038301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1710 + ... + 3316.

It is an arithmetic number, because the mean of its divisors is an integer number (578880).

Almost surely, 2^4038391 is an apocalyptic number.

4038391 is a deficient number, since it is larger than the sum of its proper divisors (592649).

4038391 is a wasteful number, since it uses less digits than its factorization.

4038391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1973.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 4038391 is about 2009.5748306545. The cubic root of 4038391 is about 159.2463383497.

The spelling of 4038391 in words is "four million, thirty-eight thousand, three hundred ninety-one".