1389494053 has 2 divisors, whose sum is σ = 1389494054. Its totient is φ = 1389494052.

The previous prime is 1389494033. The next prime is 1389494129. The reversal of 1389494053 is 3504949831.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1357038244 + 32455809 = 36838^2 + 5697^2 .

It is a cyclic number.

It is not a de Polignac number, because 1389494053 - 2¹³ = 1389485861 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1389493994 and 1389494012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1389494003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 694747026 + 694747027.

It is an arithmetic number, because the mean of its divisors is an integer number (694747027).

Almost surely, 2^1389494053 is an apocalyptic number.

It is an amenable number.

1389494053 is a deficient number, since it is larger than the sum of its proper divisors (1).

1389494053 is an equidigital number, since it uses as much as digits as its factorization.

1389494053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 466560, while the sum is 46.

The square root of 1389494053 is about 37275.9178693161. The cubic root of 1389494053 is about 1115.8836066589.

The spelling of 1389494053 in words is "one billion, three hundred eighty-nine million, four hundred ninety-four thousand, fifty-three".