1408381 has 8 divisors (see below), whose sum is σ = 1530144. Its totient is φ = 1288560.

The previous prime is 1408373. The next prime is 1408397. The reversal of 1408381 is 1838041.

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

It is not a de Polignac number, because 1408381 - 2³ = 1408373 is a prime.

It is a super-2 number, since 2×1408381² = 3967074082322, which contains 22 as substring.

It is a Duffinian number.

1408381 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1408301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1290 + ... + 2116.

It is an arithmetic number, because the mean of its divisors is an integer number (191268).

2^1408381 is an apocalyptic number.

It is an amenable number.

1408381 is a deficient number, since it is larger than the sum of its proper divisors (121763).

1408381 is a wasteful number, since it uses less digits than its factorization.

1408381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 971.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 1408381 is about 1186.7522909184. The cubic root of 1408381 is about 112.0916819450.

The spelling of 1408381 in words is "one million, four hundred eight thousand, three hundred eighty-one".