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1395823469 is a prime number
BaseRepresentation
bin101001100110010…
…1001001101101101
310121021111011211112
41103030221031231
510324312322334
6350301201405
746406206115
oct12314511555
93537434745
101395823469
116569a6917
1232b560265
13193248761
14d3546045
158281c4ce
hex5332936d

1395823469 has 2 divisors, whose sum is σ = 1395823470. Its totient is φ = 1395823468.

The previous prime is 1395823441. The next prime is 1395823477. The reversal of 1395823469 is 9643285931.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 853399369 + 542424100 = 29213^2 + 23290^2 .

It is a cyclic number.

It is not a de Polignac number, because 1395823469 - 220 = 1394774893 is a prime.

It is a super-2 number, since 2×13958234692 = 3896646313222387922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1395823439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 697911734 + 697911735.

It is an arithmetic number, because the mean of its divisors is an integer number (697911735).

Almost surely, 21395823469 is an apocalyptic number.

It is an amenable number.

1395823469 is a deficient number, since it is larger than the sum of its proper divisors (1).

1395823469 is an equidigital number, since it uses as much as digits as its factorization.

1395823469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1399680, while the sum is 50.

The square root of 1395823469 is about 37360.7209379048. The cubic root of 1395823469 is about 1117.5753961545.

The spelling of 1395823469 in words is "one billion, three hundred ninety-five million, eight hundred twenty-three thousand, four hundred sixty-nine".