1396309522 has 4 divisors (see below), whose sum is σ = 2094464286. Its totient is φ = 698154760.

The previous prime is 1396309483. The next prime is 1396309529. The reversal of 1396309522 is 2259036931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2259036931 = 23 ⋅98218997.

It can be written as a sum of positive squares in only one way, i.e., 790115881 + 606193641 = 28109^2 + 24621^2 .

It is not an unprimeable number, because it can be changed into a prime (1396309529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 349077379 + ... + 349077382.

Almost surely, 2^1396309522 is an apocalyptic number.

1396309522 is a deficient number, since it is larger than the sum of its proper divisors (698154764).

1396309522 is an equidigital number, since it uses as much as digits as its factorization.

1396309522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698154763.

The product of its (nonzero) digits is 87480, while the sum is 40.

The square root of 1396309522 is about 37367.2252381683. The cubic root of 1396309522 is about 1117.7051016288.

The spelling of 1396309522 in words is "one billion, three hundred ninety-six million, three hundred nine thousand, five hundred twenty-two".