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2240389 is a prime number
BaseRepresentation
bin1000100010111110000101
311012211020101
420202332011
51033143024
6120004101
725020514
oct10427605
94184211
102240389
1112a0268
12900631
13605998
1442467b
152e3c44
hex222f85

2240389 has 2 divisors, whose sum is σ = 2240390. Its totient is φ = 2240388.

The previous prime is 2240377. The next prime is 2240431. The reversal of 2240389 is 9830422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2030625 + 209764 = 1425^2 + 458^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-2240389 is a 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 (2240369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1120194 + 1120195.

It is an arithmetic number, because the mean of its divisors is an integer number (1120195).

22240389 is an apocalyptic number.

It is an amenable number.

2240389 is a deficient number, since it is larger than the sum of its proper divisors (1).

2240389 is an equidigital number, since it uses as much as digits as its factorization.

2240389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 2240389 is about 1496.7929048469. The cubic root of 2240389 is about 130.8502260453.

The spelling of 2240389 in words is "two million, two hundred forty thousand, three hundred eighty-nine".