1396709424 has 240 divisors, whose sum is σ = 4412289024. Its totient is φ = 408844800.

The previous prime is 1396709417. The next prime is 1396709429. The reversal of 1396709424 is 4249076931.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1396709424.

It is not an unprimeable number, because it can be changed into a prime (1396709429) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10661839 + ... + 10661969.

Almost surely, 2^1396709424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1396709424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2206144512).

1396709424 is an abundant number, since it is smaller than the sum of its proper divisors (3015579600).

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

1396709424 is a wasteful number, since it uses less digits than its factorization.

1396709424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336 (or 327 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 1396709424 is about 37372.5758277376. The cubic root of 1396709424 is about 1117.8117947448.

The spelling of 1396709424 in words is "one billion, three hundred ninety-six million, seven hundred nine thousand, four hundred twenty-four".