4050381 has 4 divisors (see below), whose sum is σ = 5400512. Its totient is φ = 2700252.

The previous prime is 4050377. The next prime is 4050433. The reversal of 4050381 is 1830504.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 4050381 - 2² = 4050377 is a prime.

It is a super-2 number, since 2×4050381² = 32811172490322, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4050311) 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, 675061 + ... + 675066.

It is an arithmetic number, because the mean of its divisors is an integer number (1350128).

Almost surely, 2^4050381 is an apocalyptic number.

It is an amenable number.

4050381 is a deficient number, since it is larger than the sum of its proper divisors (1350131).

4050381 is a wasteful number, since it uses less digits than its factorization.

4050381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1350130.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 4050381 is about 2012.5558377347. Note that the first 3 decimals coincide. The cubic root of 4050381 is about 159.4037836517.

Adding to 4050381 its reverse (1830504), we get a palindrome (5880885).

The spelling of 4050381 in words is "four million, fifty thousand, three hundred eighty-one".