427974779 has 8 divisors (see below), whose sum is σ = 468776160. Its totient is φ = 388909696.

The previous prime is 427974763. The next prime is 427974787. The reversal of 427974779 is 977479724.

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 427974779 - 2⁴ = 427974763 is a prime.

It is a super-2 number, since 2×427974779² = 366324822920197682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427974709) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 433559 + ... + 434544.

It is an arithmetic number, because the mean of its divisors is an integer number (58597020).

Almost surely, 2^427974779 is an apocalyptic number.

427974779 is a deficient number, since it is larger than the sum of its proper divisors (40801381).

427974779 is a wasteful number, since it uses less digits than its factorization.

427974779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868149.

The product of its digits is 6223392, while the sum is 56.

The square root of 427974779 is about 20687.5513050723. The cubic root of 427974779 is about 753.5974012031.

The spelling of 427974779 in words is "four hundred twenty-seven million, nine hundred seventy-four thousand, seven hundred seventy-nine".