4372381 has 8 divisors (see below), whose sum is σ = 4728024. Its totient is φ = 4019520.

The previous prime is 4372373. The next prime is 4372397. The reversal of 4372381 is 1832734.

It can be written as a sum of positive squares in 4 ways, for example, as 100 + 4372281 = 10^2 + 2091^2 .

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 4372381 - 2³ = 4372373 is a prime.

It is a super-2 number, since 2×4372381² = 38235431218322, which contains 22 as substring.

It is a Duffinian number.

4372381 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4372321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3591 + ... + 4651.

It is an arithmetic number, because the mean of its divisors is an integer number (591003).

Almost surely, 2^4372381 is an apocalyptic number.

It is an amenable number.

4372381 is a deficient number, since it is larger than the sum of its proper divisors (355643).

4372381 is a wasteful number, since it uses less digits than its factorization.

4372381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1391.

The product of its digits is 4032, while the sum is 28.

The square root of 4372381 is about 2091.0239118671. The cubic root of 4372381 is about 163.5206730991.

It can be divided in two parts, 4372 and 381, that added together give a triangular number (4753 = T₉₇).

The spelling of 4372381 in words is "four million, three hundred seventy-two thousand, three hundred eighty-one".