1385443477 has 16 divisors (see below), whose sum is σ = 1569254400. Its totient is φ = 1211595840.

The previous prime is 1385443471. The next prime is 1385443483. The reversal of 1385443477 is 7743445831.

It is an interprime number because it is at equal distance from previous prime (1385443471) and next prime (1385443483).

It is a cyclic number.

It is not a de Polignac number, because 1385443477 - 2³ = 1385443469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1385443471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80524 + ... + 96202.

It is an arithmetic number, because the mean of its divisors is an integer number (98078400).

Almost surely, 2^1385443477 is an apocalyptic number.

It is an amenable number.

1385443477 is a deficient number, since it is larger than the sum of its proper divisors (183810923).

1385443477 is a wasteful number, since it uses less digits than its factorization.

1385443477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15996.

The product of its digits is 1128960, while the sum is 46.

The square root of 1385443477 is about 37221.5458706379. The cubic root of 1385443477 is about 1114.7982306314.

The spelling of 1385443477 in words is "one billion, three hundred eighty-five million, four hundred forty-three thousand, four hundred seventy-seven".