1138471 has 4 divisors (see below), whose sum is σ = 1142944. Its totient is φ = 1134000.

The previous prime is 1138457. The next prime is 1138483. The reversal of 1138471 is 1748311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1748311 = 53 ⋅32987.

It is a cyclic number.

It is not a de Polignac number, because 1138471 - 2⁹ = 1137959 is a prime.

It is a super-3 number, since 3×1138471³ = 4426772179924983333, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1830 + ... + 2371.

It is an arithmetic number, because the mean of its divisors is an integer number (285736).

2^1138471 is an apocalyptic number.

1138471 is a deficient number, since it is larger than the sum of its proper divisors (4473).

1138471 is an equidigital number, since it uses as much as digits as its factorization.

1138471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4472.

The product of its digits is 672, while the sum is 25.

The square root of 1138471 is about 1066.9915651026. The cubic root of 1138471 is about 104.4176682614.

The spelling of 1138471 in words is "one million, one hundred thirty-eight thousand, four hundred seventy-one".