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1138999 is a prime number
BaseRepresentation
bin100010110000100110111
32010212102011
410112010313
5242421444
640225051
712452461
oct4260467
92125364
101138999
11708824
1246b187
1330b584
14219131
15177734
hex116137

1138999 has 2 divisors, whose sum is σ = 1139000. Its totient is φ = 1138998.

The previous prime is 1138997. The next prime is 1139003. The reversal of 1138999 is 9998311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1138999 - 21 = 1138997 is a prime.

Together with 1138997, it forms a pair of twin primes.

It is a Chen prime.

1138999 is a lucky number.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1138997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569499 + 569500.

It is an arithmetic number, because the mean of its divisors is an integer number (569500).

21138999 is an apocalyptic number.

1138999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1138999 is an equidigital number, since it uses as much as digits as its factorization.

1138999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17496, while the sum is 40.

The square root of 1138999 is about 1067.2389610579. The cubic root of 1138999 is about 104.4338080395.

The spelling of 1138999 in words is "one million, one hundred thirty-eight thousand, nine hundred ninety-nine".