1389422468 has 12 divisors (see below), whose sum is σ = 2778844992. Its totient is φ = 595466760.

The previous prime is 1389422429. The next prime is 1389422477. The reversal of 1389422468 is 8642249831.

1389422468 is an admirable number.

It is a super-2 number, since 2×1389422468² = 3860989589166422048, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24811088 + ... + 24811143.

It is an arithmetic number, because the mean of its divisors is an integer number (231570416).

Almost surely, 2^1389422468 is an apocalyptic number.

It is an amenable number.

1389422468 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1389422468 is a wasteful number, since it uses less digits than its factorization.

1389422468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49622242 (or 49622240 counting only the distinct ones).

The product of its digits is 663552, while the sum is 47.

The square root of 1389422468 is about 37274.9576525581. The cubic root of 1389422468 is about 1115.8644433527.

The spelling of 1389422468 in words is "one billion, three hundred eighty-nine million, four hundred twenty-two thousand, four hundred sixty-eight".