1389419473 has 12 divisors (see below), whose sum is σ = 1553058048. Its totient is φ = 1241164080.

The previous prime is 1389419467. The next prime is 1389419491. The reversal of 1389419473 is 3749149831.

It is a de Polignac number, because none of the positive numbers 2^k-1389419473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1389419413) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 127365 + ... + 137842.

It is an arithmetic number, because the mean of its divisors is an integer number (129421504).

Almost surely, 2^1389419473 is an apocalyptic number.

1389419473 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1389419473 is a deficient number, since it is larger than the sum of its proper divisors (163638575).

1389419473 is a wasteful number, since it uses less digits than its factorization.

1389419473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265264 (or 265251 counting only the distinct ones).

The product of its digits is 653184, while the sum is 49.

The square root of 1389419473 is about 37274.9174781112. The cubic root of 1389419473 is about 1115.8636415768.

The spelling of 1389419473 in words is "one billion, three hundred eighty-nine million, four hundred nineteen thousand, four hundred seventy-three".