4400381 has 4 divisors (see below), whose sum is σ = 4632000. Its totient is φ = 4168764.

The previous prime is 4400377. The next prime is 4400387. The reversal of 4400381 is 1830044.

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 a cyclic number.

It is not a de Polignac number, because 4400381 - 2² = 4400377 is a prime.

It is a super-2 number, since 2×4400381² = 38726705890322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4400387) 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, 115781 + ... + 115818.

It is an arithmetic number, because the mean of its divisors is an integer number (1158000).

Almost surely, 2^4400381 is an apocalyptic number.

It is an amenable number.

4400381 is a deficient number, since it is larger than the sum of its proper divisors (231619).

4400381 is a wasteful number, since it uses less digits than its factorization.

4400381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231618.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 4400381 is about 2097.7085116860. The cubic root of 4400381 is about 163.8689837019.

The spelling of 4400381 in words is "four million, four hundred thousand, three hundred eighty-one".