379578861 has 12 divisors (see below), whose sum is σ = 561653820. Its totient is φ = 246880320.

The previous prime is 379578833. The next prime is 379578869. The reversal of 379578861 is 168875973.

379578861 is a `hidden beast` number, since 3 + 7 + 9 + 578 + 8 + 61 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 213014025 + 166564836 = 14595^2 + 12906^2 .

It is not a de Polignac number, because 379578861 - 2⁹ = 379578349 is a prime.

It is a super-2 number, since 2×379578861² = 288160223436114642, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 379578798 and 379578807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (379578869) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 513966 + ... + 514703.

It is an arithmetic number, because the mean of its divisors is an integer number (46804485).

Almost surely, 2^379578861 is an apocalyptic number.

It is an amenable number.

379578861 is a deficient number, since it is larger than the sum of its proper divisors (182074959).

379578861 is a wasteful number, since it uses less digits than its factorization.

379578861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1028716 (or 1028713 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 54.

The square root of 379578861 is about 19482.7837076738. The cubic root of 379578861 is about 724.0479686226.

The spelling of 379578861 in words is "three hundred seventy-nine million, five hundred seventy-eight thousand, eight hundred sixty-one".