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1244004409 is a prime number
BaseRepresentation
bin100101000100110…
…0000000000111001
310012200210222020101
41022021200000321
510021431120114
6323235155401
742553602004
oct11211400071
93180728211
101244004409
11589231a1a
122a8745b61
1316a9608ab
14bb30653b
157432dd74
hex4a260039

1244004409 has 2 divisors, whose sum is σ = 1244004410. Its totient is φ = 1244004408.

The previous prime is 1244004403. The next prime is 1244004431. The reversal of 1244004409 is 9044004421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 910832400 + 333172009 = 30180^2 + 18253^2 .

It is an emirp because it is prime and its reverse (9044004421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1244004409 - 23 = 1244004401 is a prime.

It is a super-2 number, since 2×12440044092 = 3095093939222878562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1244004401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622002204 + 622002205.

It is an arithmetic number, because the mean of its divisors is an integer number (622002205).

Almost surely, 21244004409 is an apocalyptic number.

It is an amenable number.

1244004409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1244004409 is an equidigital number, since it uses as much as digits as its factorization.

1244004409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 1244004409 is about 35270.4466799047. The cubic root of 1244004409 is about 1075.4923027981.

The spelling of 1244004409 in words is "one billion, two hundred forty-four million, four thousand, four hundred nine".