427113989 has 4 divisors (see below), whose sum is σ = 431517324. Its totient is φ = 422710656.

The previous prime is 427113971. The next prime is 427114031. The reversal of 427113989 is 989311724.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 302412100 + 124701889 = 17390^2 + 11167^2 .

It is a cyclic number.

It is not a de Polignac number, because 427113989 - 2⁸ = 427113733 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 (427193989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2201522 + ... + 2201715.

It is an arithmetic number, because the mean of its divisors is an integer number (107879331).

Almost surely, 2^427113989 is an apocalyptic number.

It is an amenable number.

427113989 is a deficient number, since it is larger than the sum of its proper divisors (4403335).

427113989 is an equidigital number, since it uses as much as digits as its factorization.

427113989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4403334.

The product of its digits is 108864, while the sum is 44.

The square root of 427113989 is about 20666.7362928935. The cubic root of 427113989 is about 753.0918227357.

The spelling of 427113989 in words is "four hundred twenty-seven million, one hundred thirteen thousand, nine hundred eighty-nine".