1197497747 has 2 divisors, whose sum is σ = 1197497748. Its totient is φ = 1197497746.

The previous prime is 1197497681. The next prime is 1197497773. The reversal of 1197497747 is 7477947911.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1197497747 - 2²² = 1193303443 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1197497692 and 1197497701.

It is not a weakly prime, because it can be changed into another prime (1197497447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 598748873 + 598748874.

It is an arithmetic number, because the mean of its divisors is an integer number (598748874).

Almost surely, 2^1197497747 is an apocalyptic number.

1197497747 is a deficient number, since it is larger than the sum of its proper divisors (1).

1197497747 is an equidigital number, since it uses as much as digits as its factorization.

1197497747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3111696, while the sum is 56.

The square root of 1197497747 is about 34604.8803928001. The cubic root of 1197497747 is about 1061.9194328057.

The spelling of 1197497747 in words is "one billion, one hundred ninety-seven million, four hundred ninety-seven thousand, seven hundred forty-seven".