385139401 has 24 divisors (see below), whose sum is σ = 417879000. Its totient is φ = 354461184.

The previous prime is 385139387. The next prime is 385139411. The reversal of 385139401 is 104931583.

It can be written as a sum of positive squares in 12 ways, for example, as 38025 + 385101376 = 195^2 + 19624^2 .

It is not a de Polignac number, because 385139401 - 2⁷ = 385139273 is a prime.

It is a super-3 number, since 3×385139401³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (385139411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3533335 + ... + 3533443.

It is an arithmetic number, because the mean of its divisors is an integer number (17411625).

Almost surely, 2^385139401 is an apocalyptic number.

It is an amenable number.

385139401 is a deficient number, since it is larger than the sum of its proper divisors (32739599).

385139401 is a wasteful number, since it uses less digits than its factorization.

385139401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301 (or 264 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 385139401 is about 19624.9688152618. The cubic root of 385139401 is about 727.5664262315.

The spelling of 385139401 in words is "three hundred eighty-five million, one hundred thirty-nine thousand, four hundred one".