427926709 has 4 divisors (see below), whose sum is σ = 489059104. Its totient is φ = 366794316.

The previous prime is 427926701. The next prime is 427926743. The reversal of 427926709 is 907629724.

It is a happy number.

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 not a de Polignac number, because 427926709 - 2³ = 427926701 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 (427926701) 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, 30566187 + ... + 30566200.

It is an arithmetic number, because the mean of its divisors is an integer number (122264776).

Almost surely, 2^427926709 is an apocalyptic number.

It is an amenable number.

427926709 is a deficient number, since it is larger than the sum of its proper divisors (61132395).

427926709 is an equidigital number, since it uses as much as digits as its factorization.

427926709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61132394.

The product of its (nonzero) digits is 381024, while the sum is 46.

The square root of 427926709 is about 20686.3894626394. The cubic root of 427926709 is about 753.5691855347.

The spelling of 427926709 in words is "four hundred twenty-seven million, nine hundred twenty-six thousand, seven hundred nine".