385372069 has 4 divisors (see below), whose sum is σ = 385488396. Its totient is φ = 385255744.

The previous prime is 385371989. The next prime is 385372087. The reversal of 385372069 is 960273583.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 960273583 = 13751 ⋅69833.

It can be written as a sum of positive squares in 2 ways, for example, as 342731169 + 42640900 = 18513^2 + 6530^2 .

It is a cyclic number.

It is not a de Polignac number, because 385372069 - 2⁹ = 385371557 is a prime.

It is a super-2 number, since 2×385372069² = 297023263130681522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385372769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53044 + ... + 59869.

It is an arithmetic number, because the mean of its divisors is an integer number (96372099).

Almost surely, 2^385372069 is an apocalyptic number.

It is an amenable number.

385372069 is a deficient number, since it is larger than the sum of its proper divisors (116327).

385372069 is a wasteful number, since it uses less digits than its factorization.

385372069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116326.

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 385372069 is about 19630.8957768106. The cubic root of 385372069 is about 727.7129076941.

The spelling of 385372069 in words is "three hundred eighty-five million, three hundred seventy-two thousand, sixty-nine".