1393869071 has 8 divisors (see below), whose sum is σ = 1603544064. Its totient is φ = 1186831800.

The previous prime is 1393869067. The next prime is 1393869073. The reversal of 1393869071 is 1709683931.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1393869071 - 2² = 1393869067 is a prime.

It is a super-3 number, since 3×1393869071³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1393869073) 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 7 ways as a sum of consecutive naturals, for example, 658295 + ... + 660408.

It is an arithmetic number, because the mean of its divisors is an integer number (200443008).

Almost surely, 2^1393869071 is an apocalyptic number.

1393869071 is a deficient number, since it is larger than the sum of its proper divisors (209674993).

1393869071 is a wasteful number, since it uses less digits than its factorization.

1393869071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1318861.

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 1393869071 is about 37334.5559903958. Note that the first 3 decimals coincide. The cubic root of 1393869071 is about 1117.0535519107.

The spelling of 1393869071 in words is "one billion, three hundred ninety-three million, eight hundred sixty-nine thousand, seventy-one".