427698989 has 8 divisors (see below), whose sum is σ = 449052960. Its totient is φ = 406785456.

The previous prime is 427698983. The next prime is 427699031. The reversal of 427698989 is 989896724.

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 427698989 - 2¹² = 427694893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427698983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108119 + ... + 112004.

It is an arithmetic number, because the mean of its divisors is an integer number (56131620).

Almost surely, 2^427698989 is an apocalyptic number.

It is an amenable number.

427698989 is a deficient number, since it is larger than the sum of its proper divisors (21353971).

427698989 is a wasteful number, since it uses less digits than its factorization.

427698989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220219.

The product of its digits is 15676416, while the sum is 62.

The square root of 427698989 is about 20680.8846280811. The cubic root of 427698989 is about 753.4354919063.

The spelling of 427698989 in words is "four hundred twenty-seven million, six hundred ninety-eight thousand, nine hundred eighty-nine".