427807903 has 4 divisors (see below), whose sum is σ = 437756968. Its totient is φ = 417858840.

The previous prime is 427807871. The next prime is 427807951. The reversal of 427807903 is 309708724.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 427807903 - 2⁵ = 427807871 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 (427807993) 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, 4974468 + ... + 4974553.

It is an arithmetic number, because the mean of its divisors is an integer number (109439242).

Almost surely, 2^427807903 is an apocalyptic number.

427807903 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

427807903 is a deficient number, since it is larger than the sum of its proper divisors (9949065).

427807903 is an equidigital number, since it uses as much as digits as its factorization.

427807903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9949064.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 427807903 is about 20683.5176650395. The cubic root of 427807903 is about 753.4994408600.

The spelling of 427807903 in words is "four hundred twenty-seven million, eight hundred seven thousand, nine hundred three".