1038491 has 4 divisors (see below), whose sum is σ = 1040592. Its totient is φ = 1036392.

The previous prime is 1038487. The next prime is 1038497. The reversal of 1038491 is 1948301.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1038491 - 2² = 1038487 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1038491.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1038497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146 + ... + 1448.

It is an arithmetic number, because the mean of its divisors is an integer number (260148).

2^1038491 is an apocalyptic number.

1038491 is a deficient number, since it is larger than the sum of its proper divisors (2101).

1038491 is an equidigital number, since it uses as much as digits as its factorization.

1038491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2100.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 1038491 is about 1019.0637860311. The cubic root of 1038491 is about 101.2669148187.

The spelling of 1038491 in words is "one million, thirty-eight thousand, four hundred ninety-one".