427799718 has 20 divisors (see below), whose sum is σ = 958588620. Its totient is φ = 142599852.

The previous prime is 427799717. The next prime is 427799719. The reversal of 427799718 is 817997724.

It is an interprime number because it is at equal distance from previous prime (427799717) and next prime (427799719).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427799717) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1320208 + ... + 1320531.

It is an arithmetic number, because the mean of its divisors is an integer number (47929431).

Almost surely, 2^427799718 is an apocalyptic number.

427799718 is an abundant number, since it is smaller than the sum of its proper divisors (530788902).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

427799718 is a wasteful number, since it uses less digits than its factorization.

427799718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2640753 (or 2640744 counting only the distinct ones).

The product of its digits is 1778112, while the sum is 54.

The square root of 427799718 is about 20683.3198012311. The cubic root of 427799718 is about 753.4946354071.

The spelling of 427799718 in words is "four hundred twenty-seven million, seven hundred ninety-nine thousand, seven hundred eighteen".