4181405 has 8 divisors (see below), whose sum is σ = 5312952. Its totient is φ = 3148288.

The previous prime is 4181393. The next prime is 4181413. The reversal of 4181405 is 5041814.

It can be written as a sum of positive squares in 4 ways, for example, as 988036 + 3193369 = 994^2 + 1787^2 .

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 4181405 - 2¹² = 4177309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24512 + ... + 24681.

It is an arithmetic number, because the mean of its divisors is an integer number (664119).

Almost surely, 2^4181405 is an apocalyptic number.

It is an amenable number.

4181405 is a deficient number, since it is larger than the sum of its proper divisors (1131547).

4181405 is a wasteful number, since it uses less digits than its factorization.

4181405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49215.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 4181405 is about 2044.8484051391. The cubic root of 4181405 is about 161.1044035610.

The spelling of 4181405 in words is "four million, one hundred eighty-one thousand, four hundred five".