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1139391 = 321117677
BaseRepresentation
bin100010110001010111111
32010212221200
410112022333
5242430031
640230543
712453561
oct4261277
92125850
101139391
11709050
1246b453
1330b7c6
14219331
151778e6
hex1162bf

1139391 has 24 divisors (see below), whose sum is σ = 1903824. Its totient is φ = 648960.

The previous prime is 1139387. The next prime is 1139393. The reversal of 1139391 is 1939311.

It is not a de Polignac number, because 1139391 - 22 = 1139387 is a prime.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139393) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1345 + ... + 2021.

It is an arithmetic number, because the mean of its divisors is an integer number (79326).

21139391 is an apocalyptic number.

1139391 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1139391 is a deficient number, since it is larger than the sum of its proper divisors (764433).

1139391 is a wasteful number, since it uses less digits than its factorization.

1139391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711 (or 708 counting only the distinct ones).

The product of its digits is 729, while the sum is 27.

The square root of 1139391 is about 1067.4225967254. The cubic root of 1139391 is about 104.4457873761.

The spelling of 1139391 in words is "one million, one hundred thirty-nine thousand, three hundred ninety-one".

Divisors: 1 3 9 11 17 33 51 99 153 187 561 677 1683 2031 6093 7447 11509 22341 34527 67023 103581 126599 379797 1139391