1396563269 has 2 divisors, whose sum is σ = 1396563270. Its totient is φ = 1396563268.

The previous prime is 1396563253. The next prime is 1396563307. The reversal of 1396563269 is 9623656931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1135353025 + 261210244 = 33695^2 + 16162^2 .

It is a cyclic number.

It is not a de Polignac number, because 1396563269 - 2⁴ = 1396563253 is a prime.

It is a super-4 number, since 4×1396563269⁴ (a number of 38 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1396563769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 698281634 + 698281635.

It is an arithmetic number, because the mean of its divisors is an integer number (698281635).

Almost surely, 2^1396563269 is an apocalyptic number.

It is an amenable number.

1396563269 is a deficient number, since it is larger than the sum of its proper divisors (1).

1396563269 is an equidigital number, since it uses as much as digits as its factorization.

1396563269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1574640, while the sum is 50.

The square root of 1396563269 is about 37370.6203989177. The cubic root of 1396563269 is about 1117.7728032221.

The spelling of 1396563269 in words is "one billion, three hundred ninety-six million, five hundred sixty-three thousand, two hundred sixty-nine".