1138247 has 12 divisors (see below), whose sum is σ = 1308720. Its totient is φ = 987360.

The previous prime is 1138237. The next prime is 1138273. The reversal of 1138247 is 7428311.

It is not a de Polignac number, because 1138247 - 2⁶ = 1138183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138237) 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 11 ways as a sum of consecutive naturals, for example, 2579 + ... + 2987.

It is an arithmetic number, because the mean of its divisors is an integer number (109060).

2^1138247 is an apocalyptic number.

1138247 is a deficient number, since it is larger than the sum of its proper divisors (170473).

1138247 is a wasteful number, since it uses less digits than its factorization.

1138247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454 (or 443 counting only the distinct ones).

The product of its digits is 1344, while the sum is 26.

The square root of 1138247 is about 1066.8865919112. The cubic root of 1138247 is about 104.4108195752.

Subtracting 1138247 from its reverse (7428311), we obtain a square (6290064 = 2508²).

The spelling of 1138247 in words is "one million, one hundred thirty-eight thousand, two hundred forty-seven".