1389459050 has 48 divisors (see below), whose sum is σ = 2956661952. Its totient is φ = 475891200.

The previous prime is 1389459047. The next prime is 1389459059. The reversal of 1389459050 is 509549831.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1389458992 and 1389459010.

It is not an unprimeable number, because it can be changed into a prime (1389459059) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 534554 + ... + 537146.

It is an arithmetic number, because the mean of its divisors is an integer number (61597124).

Almost surely, 2^1389459050 is an apocalyptic number.

1389459050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1389459050 is an abundant number, since it is smaller than the sum of its proper divisors (1567202902).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1389459050 is a wasteful number, since it uses less digits than its factorization.

1389459050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4143 (or 4138 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 44.

The square root of 1389459050 is about 37275.4483541110. The cubic root of 1389459050 is about 1115.8742364372.

The spelling of 1389459050 in words is "one billion, three hundred eighty-nine million, four hundred fifty-nine thousand, fifty".