427439616 has 80 divisors (see below), whose sum is σ = 1143157488. Its totient is φ = 141926400.

The previous prime is 427439587. The next prime is 427439669. The reversal of 427439616 is 616934724.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 646326 + ... + 646986.

Almost surely, 2^427439616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 427439616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (571578744).

427439616 is an abundant number, since it is smaller than the sum of its proper divisors (715717872).

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

427439616 is an equidigital number, since it uses as much as digits as its factorization.

427439616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103 (or 1087 counting only the distinct ones).

The product of its digits is 217728, while the sum is 42.

The square root of 427439616 is about 20674.6128379711. The cubic root of 427439616 is about 753.2831570900.

The spelling of 427439616 in words is "four hundred twenty-seven million, four hundred thirty-nine thousand, six hundred sixteen".