427928708401 has 4 divisors (see below), whose sum is σ = 428640736804. Its totient is φ = 427216680000.

The previous prime is 427928708357. The next prime is 427928708429. The reversal of 427928708401 is 104807829724.

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 207170625600 + 220758082801 = 455160^2 + 469849^2 .

It is a cyclic number.

It is not a de Polignac number, because 427928708401 - 2²⁵ = 427895153969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427928708491) 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, 356013300 + ... + 356014501.

It is an arithmetic number, because the mean of its divisors is an integer number (107160184201).

Almost surely, 2^427928708401 is an apocalyptic number.

It is an amenable number.

427928708401 is a deficient number, since it is larger than the sum of its proper divisors (712028403).

427928708401 is an equidigital number, since it uses as much as digits as its factorization.

427928708401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712028402.

The product of its (nonzero) digits is 1806336, while the sum is 52.

The spelling of 427928708401 in words is "four hundred twenty-seven billion, nine hundred twenty-eight million, seven hundred eight thousand, four hundred one".