1393366856 has 16 divisors (see below), whose sum is σ = 2985786240. Its totient is φ = 597157200.

The previous prime is 1393366853. The next prime is 1393366859. The reversal of 1393366856 is 6586633931.

It is an interprime number because it is at equal distance from previous prime (1393366853) and next prime (1393366859).

It is not an unprimeable number, because it can be changed into a prime (1393366853) 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, 12440720 + ... + 12440831.

It is an arithmetic number, because the mean of its divisors is an integer number (186611640).

Almost surely, 2^1393366856 is an apocalyptic number.

It is an amenable number.

1393366856 is an abundant number, since it is smaller than the sum of its proper divisors (1592419384).

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

1393366856 is a wasteful number, since it uses less digits than its factorization.

1393366856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24881564 (or 24881560 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 50.

The square root of 1393366856 is about 37327.8295109694. The cubic root of 1393366856 is about 1116.9193766017.

The spelling of 1393366856 in words is "one billion, three hundred ninety-three million, three hundred sixty-six thousand, eight hundred fifty-six".