1398438126 has 24 divisors (see below), whose sum is σ = 3034916040. Its totient is φ = 465381936.

The previous prime is 1398438121. The next prime is 1398438149. The reversal of 1398438126 is 6218348931.

1398438126 is a `hidden beast` number, since 1 + 3 + 98 + 438 + 126 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1398438121) 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, 52336 + ... + 74403.

It is an arithmetic number, because the mean of its divisors is an integer number (126454835).

Almost surely, 2^1398438126 is an apocalyptic number.

1398438126 is an abundant number, since it is smaller than the sum of its proper divisors (1636477914).

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

1398438126 is a wasteful number, since it uses less digits than its factorization.

1398438126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127360 (or 127357 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 1398438126 is about 37395.6966240769. The cubic root of 1398438126 is about 1118.2727750970.

The spelling of 1398438126 in words is "one billion, three hundred ninety-eight million, four hundred thirty-eight thousand, one hundred twenty-six".