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2861399 is a prime number
BaseRepresentation
bin1010111010100101010111
312101101002202
422322211113
51213031044
6141155115
733215162
oct12724527
95341082
102861399
1116848a2
12b5ba9b
13792548
14546ad9
153b7c4e
hex2ba957

2861399 has 2 divisors, whose sum is σ = 2861400. Its totient is φ = 2861398.

The previous prime is 2861387. The next prime is 2861447. The reversal of 2861399 is 9931682.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2861399 - 212 = 2857303 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2861699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1430699 + 1430700.

It is an arithmetic number, because the mean of its divisors is an integer number (1430700).

22861399 is an apocalyptic number.

2861399 is a deficient number, since it is larger than the sum of its proper divisors (1).

2861399 is an equidigital number, since it uses as much as digits as its factorization.

2861399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 38.

The square root of 2861399 is about 1691.5670249801. The cubic root of 2861399 is about 141.9687658606.

The spelling of 2861399 in words is "two million, eight hundred sixty-one thousand, three hundred ninety-nine".