1385971 has 4 divisors (see below), whose sum is σ = 1399032. Its totient is φ = 1372912.

The previous prime is 1385963. The next prime is 1385977. The reversal of 1385971 is 1795831.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1795831 = 743 ⋅2417.

It is a cyclic number.

It is not a de Polignac number, because 1385971 - 2³ = 1385963 is a prime.

It is a super-2 number, since 2×1385971² = 3841831225682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1385977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6370 + ... + 6583.

It is an arithmetic number, because the mean of its divisors is an integer number (349758).

2^1385971 is an apocalyptic number.

1385971 is a deficient number, since it is larger than the sum of its proper divisors (13061).

1385971 is a wasteful number, since it uses less digits than its factorization.

1385971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13060.

The product of its digits is 7560, while the sum is 34.

The square root of 1385971 is about 1177.2726956827. The cubic root of 1385971 is about 111.4939703282.

The spelling of 1385971 in words is "one million, three hundred eighty-five thousand, nine hundred seventy-one".