1389293093 has 4 divisors (see below), whose sum is σ = 1406031648. Its totient is φ = 1372554540.

The previous prime is 1389293089. The next prime is 1389293107. The reversal of 1389293093 is 3903929831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3903929831 = 14419 ⋅270749.

It is a cyclic number.

It is not a de Polignac number, because 1389293093 - 2² = 1389293089 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1389293693) 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 in 3 ways as a sum of consecutive naturals, for example, 8369153 + ... + 8369318.

It is an arithmetic number, because the mean of its divisors is an integer number (351507912).

Almost surely, 2^1389293093 is an apocalyptic number.

It is an amenable number.

1389293093 is a deficient number, since it is larger than the sum of its proper divisors (16738555).

1389293093 is an equidigital number, since it uses as much as digits as its factorization.

1389293093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16738554.

The product of its (nonzero) digits is 314928, while the sum is 47.

The square root of 1389293093 is about 37273.2221977119. Note that the first 3 decimals coincide. The cubic root of 1389293093 is about 1115.8298079924.

The spelling of 1389293093 in words is "one billion, three hundred eighty-nine million, two hundred ninety-three thousand, ninety-three".