1389494126 has 8 divisors (see below), whose sum is σ = 2089684224. Its totient is φ = 692932720.

The previous prime is 1389494053. The next prime is 1389494129. The reversal of 1389494126 is 6214949831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1389494129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 906215 + ... + 907746.

It is an arithmetic number, because the mean of its divisors is an integer number (261210528).

Almost surely, 2^1389494126 is an apocalyptic number.

1389494126 is a deficient number, since it is larger than the sum of its proper divisors (700190098).

1389494126 is a wasteful number, since it uses less digits than its factorization.

1389494126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1814346.

The product of its digits is 373248, while the sum is 47.

The square root of 1389494126 is about 37275.9188485006. The cubic root of 1389494126 is about 1115.8836262007.

The spelling of 1389494126 in words is "one billion, three hundred eighty-nine million, four hundred ninety-four thousand, one hundred twenty-six".