1147227397 has 2 divisors, whose sum is σ = 1147227398. Its totient is φ = 1147227396.

The previous prime is 1147227349. The next prime is 1147227469. The reversal of 1147227397 is 7937227411.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 632572801 + 514654596 = 25151^2 + 22686^2 .

It is an emirp because it is prime and its reverse (7937227411) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1147227397 is a prime.

It is a super-2 number, since 2×1147227397² = 2632261400854791218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1147227307) 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, 573613698 + 573613699.

It is an arithmetic number, because the mean of its divisors is an integer number (573613699).

Almost surely, 2^1147227397 is an apocalyptic number.

It is an amenable number.

1147227397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1147227397 is an equidigital number, since it uses as much as digits as its factorization.

1147227397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 148176, while the sum is 43.

The square root of 1147227397 is about 33870.7454450002. The cubic root of 1147227397 is about 1046.8468967069.

The spelling of 1147227397 in words is "one billion, one hundred forty-seven million, two hundred twenty-seven thousand, three hundred ninety-seven".