1396398080 has 432 divisors, whose sum is σ = 4470364080. Its totient is φ = 416317440.

The previous prime is 1396398067. The next prime is 1396398083. The reversal of 1396398080 is 808936931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1396398083) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 60712949 + ... + 60712971.

It is an arithmetic number, because the mean of its divisors is an integer number (10348065).

Almost surely, 2^1396398080 is an apocalyptic number.

1396398080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1396398080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2235182040).

1396398080 is an abundant number, since it is smaller than the sum of its proper divisors (3073966000).

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

1396398080 is a wasteful number, since it uses less digits than its factorization.

1396398080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86 (or 48 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 47.

The square root of 1396398080 is about 37368.4101882860. The cubic root of 1396398080 is about 1117.7287304958.

The spelling of 1396398080 in words is "one billion, three hundred ninety-six million, three hundred ninety-eight thousand, eighty".