427840733 has 4 divisors (see below), whose sum is σ = 446442528. Its totient is φ = 409238940.

The previous prime is 427840729. The next prime is 427840739. The reversal of 427840733 is 337048724.

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 427840733 - 2² = 427840729 is a prime.

It is a super-3 number, since 3×427840733³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427840739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9300863 + ... + 9300908.

It is an arithmetic number, because the mean of its divisors is an integer number (111610632).

Almost surely, 2^427840733 is an apocalyptic number.

It is an amenable number.

427840733 is a deficient number, since it is larger than the sum of its proper divisors (18601795).

427840733 is a wasteful number, since it uses less digits than its factorization.

427840733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18601794.

The product of its (nonzero) digits is 112896, while the sum is 38.

The square root of 427840733 is about 20684.3112769074. The cubic root of 427840733 is about 753.5187148953.

The spelling of 427840733 in words is "four hundred twenty-seven million, eight hundred forty thousand, seven hundred thirty-three".