1438534 has 4 divisors (see below), whose sum is σ = 2157804. Its totient is φ = 719266.

The previous prime is 1438517. The next prime is 1438537. The reversal of 1438534 is 4358341.

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

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1438537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 359632 + ... + 359635.

It is an arithmetic number, because the mean of its divisors is an integer number (539451).

2^1438534 is an apocalyptic number.

1438534 is a deficient number, since it is larger than the sum of its proper divisors (719270).

1438534 is an equidigital number, since it uses as much as digits as its factorization.

1438534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719269.

The product of its digits is 5760, while the sum is 28.

The square root of 1438534 is about 1199.3890111219. The cubic root of 1438534 is about 112.8859893757.

The spelling of 1438534 in words is "one million, four hundred thirty-eight thousand, five hundred thirty-four".