427929193 has 4 divisors (see below), whose sum is σ = 428008068. Its totient is φ = 427850320.

The previous prime is 427929181. The next prime is 427929199. The reversal of 427929193 is 391929724.

It is a happy number.

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 271854144 + 156075049 = 16488^2 + 12493^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-427929193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427929199) 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, 30646 + ... + 42367.

It is an arithmetic number, because the mean of its divisors is an integer number (107002017).

Almost surely, 2^427929193 is an apocalyptic number.

It is an amenable number.

427929193 is a deficient number, since it is larger than the sum of its proper divisors (78875).

427929193 is an equidigital number, since it uses as much as digits as its factorization.

427929193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78874.

The product of its digits is 244944, while the sum is 46.

The square root of 427929193 is about 20686.4495020291. The cubic root of 427929193 is about 753.5706436210.

The spelling of 427929193 in words is "four hundred twenty-seven million, nine hundred twenty-nine thousand, one hundred ninety-three".