1438402 has 16 divisors (see below), whose sum is σ = 2488320. Its totient is φ = 610848.

The previous prime is 1438399. The next prime is 1438417. The reversal of 1438402 is 2048341.

It is an Ulam number.

It is an unprimeable number.

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, 1374 + ... + 2182.

It is an arithmetic number, because the mean of its divisors is an integer number (155520).

2^1438402 is an apocalyptic number.

1438402 is a deficient number, since it is larger than the sum of its proper divisors (1049918).

1438402 is a wasteful number, since it uses less digits than its factorization.

1438402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1438402 is about 1199.3339818416. Note that the first 3 decimals coincide. The cubic root of 1438402 is about 112.8825364609.

It can be divided in two parts, 14 and 38402, that added together give a 4-th power (38416 = 14⁴).

The spelling of 1438402 in words is "one million, four hundred thirty-eight thousand, four hundred two".