455779988 has 12 divisors (see below), whose sum is σ = 801665172. Its totient is φ = 226732800.

The previous prime is 455779981. The next prime is 455779997. The reversal of 455779988 is 889977554.

It can be written as a sum of positive squares in 2 ways, for example, as 432140944 + 23639044 = 20788^2 + 4862^2 .

It is a super-2 number, since 2×455779988² = 415470794922560288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 455779988.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (455779981) 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, 288413 + ... + 289988.

It is an arithmetic number, because the mean of its divisors is an integer number (66805431).

Almost surely, 2^455779988 is an apocalyptic number.

It is an amenable number.

455779988 is a deficient number, since it is larger than the sum of its proper divisors (345885184).

455779988 is a wasteful number, since it uses less digits than its factorization.

455779988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578602 (or 578600 counting only the distinct ones).

The product of its digits is 25401600, while the sum is 62.

The square root of 455779988 is about 21349.0043795958. The cubic root of 455779988 is about 769.5764173895.

The spelling of 455779988 in words is "four hundred fifty-five million, seven hundred seventy-nine thousand, nine hundred eighty-eight".