427969423 has 4 divisors (see below), whose sum is σ = 489107920. Its totient is φ = 366830928.

The previous prime is 427969393. The next prime is 427969459. The reversal of 427969423 is 324969724.

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

It is a cyclic number.

It is not a de Polignac number, because 427969423 - 2¹⁷ = 427838351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427961423) 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, 30569238 + ... + 30569251.

It is an arithmetic number, because the mean of its divisors is an integer number (122276980).

Almost surely, 2^427969423 is an apocalyptic number.

427969423 is a deficient number, since it is larger than the sum of its proper divisors (61138497).

427969423 is an equidigital number, since it uses as much as digits as its factorization.

427969423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61138496.

The product of its digits is 653184, while the sum is 46.

The square root of 427969423 is about 20687.4218548373. The cubic root of 427969423 is about 753.5942574941.

The spelling of 427969423 in words is "four hundred twenty-seven million, nine hundred sixty-nine thousand, four hundred twenty-three".