1438090 has 16 divisors (see below), whose sum is σ = 2672640. Its totient is φ = 556560.

The previous prime is 1438069. The next prime is 1438093. The reversal of 1438090 is 908341.

It is not an unprimeable number, because it can be changed into a prime (1438093) 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, 2010 + ... + 2629.

It is an arithmetic number, because the mean of its divisors is an integer number (167040).

2^1438090 is an apocalyptic number.

1438090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1438090 is a deficient number, since it is larger than the sum of its proper divisors (1234550).

1438090 is a wasteful number, since it uses less digits than its factorization.

1438090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4677.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1438090 is about 1199.2039025954. The cubic root of 1438090 is about 112.8743741858.

The spelling of 1438090 in words is "one million, four hundred thirty-eight thousand, ninety".