386402849 has 4 divisors (see below), whose sum is σ = 441603264. Its totient is φ = 331202436.

The previous prime is 386402837. The next prime is 386402851. The reversal of 386402849 is 948204683.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 948204683 = 263 ⋅3605341.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-386402849 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (386402899) 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, 27600197 + ... + 27600210.

It is an arithmetic number, because the mean of its divisors is an integer number (110400816).

Almost surely, 2^386402849 is an apocalyptic number.

It is an amenable number.

386402849 is a deficient number, since it is larger than the sum of its proper divisors (55200415).

386402849 is an equidigital number, since it uses as much as digits as its factorization.

386402849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55200414.

The product of its (nonzero) digits is 331776, while the sum is 44.

The square root of 386402849 is about 19657.1322679581. The cubic root of 386402849 is about 728.3611505846.

The spelling of 386402849 in words is "three hundred eighty-six million, four hundred two thousand, eight hundred forty-nine".