1396641024 has 54 divisors (see below), whose sum is σ = 4026867026. Its totient is φ = 465546240.

The previous prime is 1396641023. The next prime is 1396641041. The reversal of 1396641024 is 4201466931.

1396641024 is a `hidden beast` number, since 1 + 3 + 9 + 6 + 641 + 0 + 2 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1296000000 + 100641024 = 36000^2 + 10032^2 .

It is a super-2 number, since 2×1396641024² = 3901212299839537152, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1396641024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1396641023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 300787 + ... + 305394.

Almost surely, 2^1396641024 is an apocalyptic number.

It is an amenable number.

1396641024 is an abundant number, since it is smaller than the sum of its proper divisors (2630226002).

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

1396641024 is an equidigital number, since it uses as much as digits as its factorization.

1396641024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606203 (or 606186 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 1396641024 is about 37371.6607070117. The cubic root of 1396641024 is about 1117.7935471949.

The spelling of 1396641024 in words is "one billion, three hundred ninety-six million, six hundred forty-one thousand, twenty-four".