427889449 has 8 divisors (see below), whose sum is σ = 461039040. Its totient is φ = 394773456.

The previous prime is 427889411. The next prime is 427889459. The reversal of 427889449 is 944988724.

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 427889449 - 2¹⁹ = 427365161 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 427889449.

It is not an unprimeable number, because it can be changed into a prime (427889459) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 22212 + ... + 36730.

It is an arithmetic number, because the mean of its divisors is an integer number (57629880).

Almost surely, 2^427889449 is an apocalyptic number.

It is an amenable number.

427889449 is a deficient number, since it is larger than the sum of its proper divisors (33149591).

427889449 is a wasteful number, since it uses less digits than its factorization.

427889449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16799.

The product of its digits is 4644864, while the sum is 55.

The square root of 427889449 is about 20685.4888508829. The cubic root of 427889449 is about 753.5473135628.

The spelling of 427889449 in words is "four hundred twenty-seven million, eight hundred eighty-nine thousand, four hundred forty-nine".