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BaseRepresentation
bin101010011001011000101
32121120200211
411103023011
5323424003
645435421
714544205
oct5231305
92546624
101389253
11869848
1256bb71
13398458
14282405
151c696d
hex1532c5

1389253 has 4 divisors (see below), whose sum is σ = 1400320. Its totient is φ = 1378188.

The previous prime is 1389251. The next prime is 1389259. The reversal of 1389253 is 3529831.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3529831 = 15722483.

It is a cyclic number.

It is not a de Polignac number, because 1389253 - 21 = 1389251 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 (1389251) 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, 5343 + ... + 5596.

It is an arithmetic number, because the mean of its divisors is an integer number (350080).

21389253 is an apocalyptic number.

It is an amenable number.

1389253 is a deficient number, since it is larger than the sum of its proper divisors (11067).

1389253 is a wasteful number, since it uses less digits than its factorization.

1389253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11066.

The product of its digits is 6480, while the sum is 31.

The square root of 1389253 is about 1178.6657711158. The cubic root of 1389253 is about 111.5819074142.

The spelling of 1389253 in words is "one million, three hundred eighty-nine thousand, two hundred fifty-three".

Divisors: 1 127 10939 1389253