1393346980 has 12 divisors (see below), whose sum is σ = 2926028700. Its totient is φ = 557338784.

The previous prime is 1393346971. The next prime is 1393346989. The reversal of 1393346980 is 896433931.

It is an interprime number because it is at equal distance from previous prime (1393346971) and next prime (1393346989).

It can be written as a sum of positive squares in 2 ways, for example, as 305270784 + 1088076196 = 17472^2 + 32986^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1393346980.

It is not an unprimeable number, because it can be changed into a prime (1393346989) 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 3 ways as a sum of consecutive naturals, for example, 34833655 + ... + 34833694.

It is an arithmetic number, because the mean of its divisors is an integer number (243835725).

Almost surely, 2^1393346980 is an apocalyptic number.

1393346980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1393346980 is an abundant number, since it is smaller than the sum of its proper divisors (1532681720).

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

1393346980 is a wasteful number, since it uses less digits than its factorization.

1393346980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69667358 (or 69667356 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 46.

The square root of 1393346980 is about 37327.5632743419. The cubic root of 1393346980 is about 1116.9140657259.

The spelling of 1393346980 in words is "one billion, three hundred ninety-three million, three hundred forty-six thousand, nine hundred eighty".