427977774 has 108 divisors (see below), whose sum is σ = 1130116104. Its totient is φ = 114649344.

The previous prime is 427977763. The next prime is 427977821. The reversal of 427977774 is 477779724.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 427977774.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 4412094 + ... + 4412190.

It is an arithmetic number, because the mean of its divisors is an integer number (10464038).

Almost surely, 2^427977774 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 427977774, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (565058052).

427977774 is an abundant number, since it is smaller than the sum of its proper divisors (702138330).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

427977774 is a wasteful number, since it uses less digits than its factorization.

427977774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247 (or 128 counting only the distinct ones).

The product of its digits is 4840416, while the sum is 54.

The square root of 427977774 is about 20687.6236914731. The cubic root of 427977774 is about 753.5991591096.

The spelling of 427977774 in words is "four hundred twenty-seven million, nine hundred seventy-seven thousand, seven hundred seventy-four".