1393959933 has 6 divisors (see below), whose sum is σ = 2013497694. Its totient is φ = 929306616.

The previous prime is 1393959913. The next prime is 1393959949. The reversal of 1393959933 is 3399593931.

It is a happy number.

1393959933 is a `hidden beast` number, since 13 + 9 + 3 + 9 + 599 + 33 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1263589209 + 130370724 = 35547^2 + 11418^2 .

It is not a de Polignac number, because 1393959933 - 2¹⁴ = 1393943549 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1393959933.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1393959913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 77442210 + ... + 77442227.

It is an arithmetic number, because the mean of its divisors is an integer number (335582949).

Almost surely, 2^1393959933 is an apocalyptic number.

It is an amenable number.

1393959933 is a deficient number, since it is larger than the sum of its proper divisors (619537761).

1393959933 is a wasteful number, since it uses less digits than its factorization.

1393959933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154884443 (or 154884440 counting only the distinct ones).

The product of its digits is 2657205, while the sum is 54.

The square root of 1393959933 is about 37335.7728324994. The cubic root of 1393959933 is about 1117.0778238017.

The spelling of 1393959933 in words is "one billion, three hundred ninety-three million, nine hundred fifty-nine thousand, nine hundred thirty-three".