386671649 has 32 divisors (see below), whose sum is σ = 496011264. Its totient is φ = 293207040.

The previous prime is 386671631. The next prime is 386671651. The reversal of 386671649 is 946176683.

It is not a de Polignac number, because 386671649 - 2⁸ = 386671393 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 386671597 and 386671606.

It is not an unprimeable number, because it can be changed into a prime (386671049) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 318167 + ... + 319379.

It is an arithmetic number, because the mean of its divisors is an integer number (15500352).

Almost surely, 2^386671649 is an apocalyptic number.

It is an amenable number.

386671649 is a deficient number, since it is larger than the sum of its proper divisors (109339615).

386671649 is a wasteful number, since it uses less digits than its factorization.

386671649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1377.

The product of its digits is 1306368, while the sum is 50.

The square root of 386671649 is about 19663.9682922853. The cubic root of 386671649 is about 728.5300055302.

The spelling of 386671649 in words is "three hundred eighty-six million, six hundred seventy-one thousand, six hundred forty-nine".