1269059399 has 2 divisors, whose sum is σ = 1269059400. Its totient is φ = 1269059398.

The previous prime is 1269059377. The next prime is 1269059461. The reversal of 1269059399 is 9939509621.

It is a weak prime.

It is an emirp because it is prime and its reverse (9939509621) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1269059399 is a prime.

It is a super-2 number, since 2×1269059399² = 3221023516380482402, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1269059399.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1269059699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 634529699 + 634529700.

It is an arithmetic number, because the mean of its divisors is an integer number (634529700).

Almost surely, 2^1269059399 is an apocalyptic number.

1269059399 is a deficient number, since it is larger than the sum of its proper divisors (1).

1269059399 is an equidigital number, since it uses as much as digits as its factorization.

1269059399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1180980, while the sum is 53.

The square root of 1269059399 is about 35623.8599677239. The cubic root of 1269059399 is about 1082.6647158711.

The spelling of 1269059399 in words is "one billion, two hundred sixty-nine million, fifty-nine thousand, three hundred ninety-nine".