1409491 has 2 divisors, whose sum is σ = 1409492. Its totient is φ = 1409490.

The previous prime is 1409489. The next prime is 1409503. The reversal of 1409491 is 1949041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1409491 - 2¹ = 1409489 is a prime.

Together with 1409489, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1409791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 704745 + 704746.

It is an arithmetic number, because the mean of its divisors is an integer number (704746).

2^1409491 is an apocalyptic number.

1409491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1409491 is an equidigital number, since it uses as much as digits as its factorization.

1409491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 1409491 is about 1187.2198616937. The cubic root of 1409491 is about 112.1211221543.

The spelling of 1409491 in words is "one million, four hundred nine thousand, four hundred ninety-one".