1389367297 has 4 divisors (see below), whose sum is σ = 1389593556. Its totient is φ = 1389141040.

The previous prime is 1389367277. The next prime is 1389367303. The reversal of 1389367297 is 7927639831.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 829382401 + 559984896 = 28799^2 + 23664^2 .

It is a cyclic number.

It is not a de Polignac number, because 1389367297 - 2²³ = 1380978689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1389367237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103654 + ... + 116287.

It is an arithmetic number, because the mean of its divisors is an integer number (347398389).

Almost surely, 2^1389367297 is an apocalyptic number.

It is an amenable number.

1389367297 is a deficient number, since it is larger than the sum of its proper divisors (226259).

1389367297 is an equidigital number, since it uses as much as digits as its factorization.

1389367297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226258.

The product of its digits is 3429216, while the sum is 55.

The square root of 1389367297 is about 37274.2175907154. The cubic root of 1389367297 is about 1115.8496736256.

The spelling of 1389367297 in words is "one billion, three hundred eighty-nine million, three hundred sixty-seven thousand, two hundred ninety-seven".