255379969 has 8 divisors (see below), whose sum is σ = 289499840. Its totient is φ = 223328016.

The previous prime is 255379963. The next prime is 255379973. The reversal of 255379969 is 969973552.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 255379969 - 2¹³ = 255371777 is a prime.

It is a super-2 number, since 2×255379969² = 130437857132881922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255379963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 516717 + ... + 517210.

It is an arithmetic number, because the mean of its divisors is an integer number (36187480).

Almost surely, 2^255379969 is an apocalyptic number.

It is an amenable number.

255379969 is a deficient number, since it is larger than the sum of its proper divisors (34119871).

255379969 is a wasteful number, since it uses less digits than its factorization.

255379969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033959.

The product of its digits is 4592700, while the sum is 55.

The square root of 255379969 is about 15980.6122848907. The cubic root of 255379969 is about 634.4473824856.

The spelling of 255379969 in words is "two hundred fifty-five million, three hundred seventy-nine thousand, nine hundred sixty-nine".