1427022689 has 4 divisors (see below), whose sum is σ = 1432065456. Its totient is φ = 1421979924.

The previous prime is 1427022613. The next prime is 1427022703. The reversal of 1427022689 is 9862207241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1427022689 - 2²⁸ = 1158587233 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1427082689) 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, 2520959 + ... + 2521524.

It is an arithmetic number, because the mean of its divisors is an integer number (358016364).

Almost surely, 2^1427022689 is an apocalyptic number.

It is an amenable number.

1427022689 is a deficient number, since it is larger than the sum of its proper divisors (5042767).

1427022689 is an equidigital number, since it uses as much as digits as its factorization.

1427022689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5042766.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 1427022689 is about 37775.9538463293. The cubic root of 1427022689 is about 1125.8407381908.

The spelling of 1427022689 in words is "one billion, four hundred twenty-seven million, twenty-two thousand, six hundred eighty-nine".