1396539293 has 2 divisors, whose sum is σ = 1396539294. Its totient is φ = 1396539292.

The previous prime is 1396539289. The next prime is 1396539299. The reversal of 1396539293 is 3929356931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1388456644 + 8082649 = 37262^2 + 2843^2 .

It is a cyclic number.

It is not a de Polignac number, because 1396539293 - 2² = 1396539289 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1396539299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 698269646 + 698269647.

It is an arithmetic number, because the mean of its divisors is an integer number (698269647).

Almost surely, 2^1396539293 is an apocalyptic number.

It is an amenable number.

1396539293 is a deficient number, since it is larger than the sum of its proper divisors (1).

1396539293 is an equidigital number, since it uses as much as digits as its factorization.

1396539293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1180980, while the sum is 50.

The square root of 1396539293 is about 37370.2996107872. The cubic root of 1396539293 is about 1117.7664065972.

The spelling of 1396539293 in words is "one billion, three hundred ninety-six million, five hundred thirty-nine thousand, two hundred ninety-three".