1438047 has 32 divisors (see below), whose sum is σ = 2439360. Its totient is φ = 829440.

The previous prime is 1438033. The next prime is 1438057. The reversal of 1438047 is 7408341.

It is not a de Polignac number, because 1438047 - 2¹⁴ = 1421663 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 1438047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1438057) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5847 + ... + 6087.

It is an arithmetic number, because the mean of its divisors is an integer number (76230).

2^1438047 is an apocalyptic number.

1438047 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1438047 is a deficient number, since it is larger than the sum of its proper divisors (1001313).

1438047 is a wasteful number, since it uses less digits than its factorization.

1438047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280 (or 274 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 1438047 is about 1199.1859739006. The cubic root of 1438047 is about 112.8732491644.

The spelling of 1438047 in words is "one million, four hundred thirty-eight thousand, forty-seven".