384979853 has 4 divisors (see below), whose sum is σ = 385347900. Its totient is φ = 384611808.

The previous prime is 384979849. The next prime is 384979871. The reversal of 384979853 is 358979483.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 339038569 + 45941284 = 18413^2 + 6778^2 .

It is a cyclic number.

It is not a de Polignac number, because 384979853 - 2² = 384979849 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384979883) 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, 182450 + ... + 184547.

It is an arithmetic number, because the mean of its divisors is an integer number (96336975).

Almost surely, 2^384979853 is an apocalyptic number.

It is an amenable number.

384979853 is a deficient number, since it is larger than the sum of its proper divisors (368047).

384979853 is a wasteful number, since it uses less digits than its factorization.

384979853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368046.

The product of its digits is 6531840, while the sum is 56.

The square root of 384979853 is about 19620.9034705337. The cubic root of 384979853 is about 727.4659450370.

The spelling of 384979853 in words is "three hundred eighty-four million, nine hundred seventy-nine thousand, eight hundred fifty-three".