1411981 has 8 divisors (see below), whose sum is σ = 1474200. Its totient is φ = 1350720.

The previous prime is 1411979. The next prime is 1411987. The reversal of 1411981 is 1891141.

It can be written as a sum of positive squares in 4 ways, for example, as 54756 + 1357225 = 234^2 + 1165^2 .

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 1411981 - 2¹ = 1411979 is a prime.

It is a super-2 number, since 2×1411981² = 3987380688722, which contains 22 as substring.

It is an Ulam 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 (1411987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5115 + ... + 5383.

It is an arithmetic number, because the mean of its divisors is an integer number (184275).

2^1411981 is an apocalyptic number.

It is an amenable number.

1411981 is a deficient number, since it is larger than the sum of its proper divisors (62219).

1411981 is a wasteful number, since it uses less digits than its factorization.

1411981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479.

The product of its digits is 288, while the sum is 25.

The square root of 1411981 is about 1188.2680673989. The cubic root of 1411981 is about 112.1871075242.

The spelling of 1411981 in words is "one million, four hundred eleven thousand, nine hundred eighty-one".