1385808479 has 8 divisors (see below), whose sum is σ = 1512526080. Its totient is φ = 1259213400.

The previous prime is 1385808449. The next prime is 1385808481. The reversal of 1385808479 is 9748085831.

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

It is a cyclic number.

It is not a de Polignac number, because 1385808479 - 2⁸ = 1385808223 is a prime.

It is a super-5 number, since 5×1385808479⁵ (a number of 47 digits) contains 55555 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1385808479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1385808419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6119 + ... + 53000.

It is an arithmetic number, because the mean of its divisors is an integer number (189065760).

Almost surely, 2^1385808479 is an apocalyptic number.

1385808479 is a deficient number, since it is larger than the sum of its proper divisors (126717601).

1385808479 is a wasteful number, since it uses less digits than its factorization.

1385808479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61261.

The product of its (nonzero) digits is 1935360, while the sum is 53.

The square root of 1385808479 is about 37226.4486487766. The cubic root of 1385808479 is about 1114.8961217549.

The spelling of 1385808479 in words is "one billion, three hundred eighty-five million, eight hundred eight thousand, four hundred seventy-nine".