1396321249 has 2 divisors, whose sum is σ = 1396321250. Its totient is φ = 1396321248.

The previous prime is 1396321243. The next prime is 1396321259. The reversal of 1396321249 is 9421236931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1381460224 + 14861025 = 37168^2 + 3855^2 .

It is a cyclic number.

It is not a de Polignac number, because 1396321249 - 2²⁵ = 1362766817 is a prime.

It is not a weakly prime, because it can be changed into another prime (1396321243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 698160624 + 698160625.

It is an arithmetic number, because the mean of its divisors is an integer number (698160625).

Almost surely, 2^1396321249 is an apocalyptic number.

It is an amenable number.

1396321249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1396321249 is an equidigital number, since it uses as much as digits as its factorization.

1396321249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 40.

The square root of 1396321249 is about 37367.3821534236. The cubic root of 1396321249 is about 1117.7082306607.

The spelling of 1396321249 in words is "one billion, three hundred ninety-six million, three hundred twenty-one thousand, two hundred forty-nine".