13491441 has 10 divisors (see below), whose sum is σ = 20154002. Its totient is φ = 8994240.

The previous prime is 13491437. The next prime is 13491449. The reversal of 13491441 is 14419431.

13491441 is a `hidden beast` number, since 134 + 91 + 441 = 666.

It can be written as a sum of positive squares in only one way, i.e., 12960000 + 531441 = 3600^2 + 729^2 .

It is not a de Polignac number, because 13491441 - 2² = 13491437 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13491449) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 83200 + ... + 83361.

Almost surely, 2^13491441 is an apocalyptic number.

It is an amenable number.

13491441 is a deficient number, since it is larger than the sum of its proper divisors (6662561).

13491441 is an equidigital number, since it uses as much as digits as its factorization.

13491441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166573 (or 166564 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 13491441 is about 3673.0696971334. The cubic root of 13491441 is about 238.0598265437.

The spelling of 13491441 in words is "thirteen million, four hundred ninety-one thousand, four hundred forty-one".