427978601 has 4 divisors (see below), whose sum is σ = 428101632. Its totient is φ = 427855572.

The previous prime is 427978597. The next prime is 427978609. The reversal of 427978601 is 106879724.

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 427978601 - 2² = 427978597 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427978609) 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, 56141 + ... + 63306.

It is an arithmetic number, because the mean of its divisors is an integer number (107025408).

Almost surely, 2^427978601 is an apocalyptic number.

It is an amenable number.

427978601 is a deficient number, since it is larger than the sum of its proper divisors (123031).

427978601 is a wasteful number, since it uses less digits than its factorization.

427978601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123030.

The product of its (nonzero) digits is 169344, while the sum is 44.

The square root of 427978601 is about 20687.6436792594. The cubic root of 427978601 is about 753.5996445134.

The spelling of 427978601 in words is "four hundred twenty-seven million, nine hundred seventy-eight thousand, six hundred one".