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1397219 is a prime number
BaseRepresentation
bin101010101000111100011
32121222121212
411111013203
5324202334
645540335
714606345
oct5250743
92558555
101397219
1187482a
125746ab
1339bc75
14285295
151c8ece
hex1551e3

1397219 has 2 divisors, whose sum is σ = 1397220. Its totient is φ = 1397218.

The previous prime is 1397189. The next prime is 1397233. The reversal of 1397219 is 9127931.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1397219 - 28 = 1396963 is a prime.

It is a super-2 number, since 2×13972192 = 3904441867922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1397119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 698609 + 698610.

It is an arithmetic number, because the mean of its divisors is an integer number (698610).

21397219 is an apocalyptic number.

1397219 is a deficient number, since it is larger than the sum of its proper divisors (1).

1397219 is an equidigital number, since it uses as much as digits as its factorization.

1397219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3402, while the sum is 32.

The square root of 1397219 is about 1182.0401854421. The cubic root of 1397219 is about 111.7947719177.

The spelling of 1397219 in words is "one million, three hundred ninety-seven thousand, two hundred nineteen".