427951970 has 8 divisors (see below), whose sum is σ = 770313564. Its totient is φ = 171180784.

The previous prime is 427951963. The next prime is 427952009. The reversal of 427951970 is 79159724.

It is a Cunningham number, because it is equal to 20687²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 427951969 + 1 = 20687^2 + 1^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21397589 + ... + 21397608.

Almost surely, 2^427951970 is an apocalyptic number.

427951970 is a deficient number, since it is larger than the sum of its proper divisors (342361594).

427951970 is a wasteful number, since it uses less digits than its factorization.

427951970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42795204.

The product of its (nonzero) digits is 158760, while the sum is 44.

The square root of 427951970 is about 20687.0000241698. Note that the first 4 decimals coincide. The cubic root of 427951970 is about 753.5840132581.

The spelling of 427951970 in words is "four hundred twenty-seven million, nine hundred fifty-one thousand, nine hundred seventy".