1299462397 has 2 divisors, whose sum is σ = 1299462398. Its totient is φ = 1299462396.

The previous prime is 1299462379. The next prime is 1299462407. The reversal of 1299462397 is 7932649921.

It is a happy number.

Together with previous prime (1299462379) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1112155801 + 187306596 = 33349^2 + 13686^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1299462397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1299462097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 649731198 + 649731199.

It is an arithmetic number, because the mean of its divisors is an integer number (649731199).

Almost surely, 2^1299462397 is an apocalyptic number.

It is an amenable number.

1299462397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1299462397 is an equidigital number, since it uses as much as digits as its factorization.

1299462397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1469664, while the sum is 52.

The square root of 1299462397 is about 36048.0567714821. The cubic root of 1299462397 is about 1091.2424171671.

The spelling of 1299462397 in words is "one billion, two hundred ninety-nine million, four hundred sixty-two thousand, three hundred ninety-seven".