385779955 has 16 divisors (see below), whose sum is σ = 505983744. Its totient is φ = 280032480.

The previous prime is 385779949. The next prime is 385779959. The reversal of 385779955 is 559977583.

It is not a de Polignac number, because 385779955 - 2¹⁷ = 385648883 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 385779955.

It is not an unprimeable number, because it can be changed into a prime (385779959) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23674 + ... + 36496.

It is an arithmetic number, because the mean of its divisors is an integer number (31623984).

Almost surely, 2^385779955 is an apocalyptic number.

385779955 is a deficient number, since it is larger than the sum of its proper divisors (120203789).

385779955 is a wasteful number, since it uses less digits than its factorization.

385779955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13386.

The product of its digits is 11907000, while the sum is 58.

The square root of 385779955 is about 19641.2819082666. The cubic root of 385779955 is about 727.9695594435.

The spelling of 385779955 in words is "three hundred eighty-five million, seven hundred seventy-nine thousand, nine hundred fifty-five".