1385956417 has 4 divisors (see below), whose sum is σ = 1408677076. Its totient is φ = 1363235760.

The previous prime is 1385956391. The next prime is 1385956421. The reversal of 1385956417 is 7146595831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7146595831 = 29 ⋅246434339.

It can be written as a sum of positive squares in 2 ways, for example, as 606932496 + 779023921 = 24636^2 + 27911^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1385956417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1385956427) 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, 11360238 + ... + 11360359.

It is an arithmetic number, because the mean of its divisors is an integer number (352169269).

Almost surely, 2^1385956417 is an apocalyptic number.

It is an amenable number.

1385956417 is a deficient number, since it is larger than the sum of its proper divisors (22720659).

1385956417 is an equidigital number, since it uses as much as digits as its factorization.

1385956417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22720658.

The product of its digits is 907200, while the sum is 49.

The square root of 1385956417 is about 37228.4355970003. The cubic root of 1385956417 is about 1114.9357928533.

The spelling of 1385956417 in words is "one billion, three hundred eighty-five million, nine hundred fifty-six thousand, four hundred seventeen".