1365439249 has 2 divisors, whose sum is σ = 1365439250. Its totient is φ = 1365439248.

The previous prime is 1365439223. The next prime is 1365439259. The reversal of 1365439249 is 9429345631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1359028225 + 6411024 = 36865^2 + 2532^2 .

It is a cyclic number.

It is not a de Polignac number, because 1365439249 - 2⁵ = 1365439217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1365439199 and 1365439208.

It is not a weakly prime, because it can be changed into another prime (1365439259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 682719624 + 682719625.

It is an arithmetic number, because the mean of its divisors is an integer number (682719625).

Almost surely, 2^1365439249 is an apocalyptic number.

It is an amenable number.

1365439249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1365439249 is an equidigital number, since it uses as much as digits as its factorization.

1365439249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 699840, while the sum is 46.

The square root of 1365439249 is about 36951.8504137479. The cubic root of 1365439249 is about 1109.4067248683.

The spelling of 1365439249 in words is "one billion, three hundred sixty-five million, four hundred thirty-nine thousand, two hundred forty-nine".