1396657459 has 2 divisors, whose sum is σ = 1396657460. Its totient is φ = 1396657458.

The previous prime is 1396657447. The next prime is 1396657519. The reversal of 1396657459 is 9547566931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1396657459 - 2¹¹ = 1396655411 is a prime.

It is not a weakly prime, because it can be changed into another prime (1396757459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 698328729 + 698328730.

It is an arithmetic number, because the mean of its divisors is an integer number (698328730).

Almost surely, 2^1396657459 is an apocalyptic number.

1396657459 is a deficient number, since it is larger than the sum of its proper divisors (1).

1396657459 is an equidigital number, since it uses as much as digits as its factorization.

1396657459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6123600, while the sum is 55.

The square root of 1396657459 is about 37371.8805922314. The cubic root of 1396657459 is about 1117.7979317300.

The spelling of 1396657459 in words is "one billion, three hundred ninety-six million, six hundred fifty-seven thousand, four hundred fifty-nine".