427679999 has 16 divisors (see below), whose sum is σ = 472043520. Its totient is φ = 385706880.

The previous prime is 427679981. The next prime is 427680017. The reversal of 427679999 is 999976724.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (427679981) and next prime (427680017).

It is not a de Polignac number, because 427679999 - 2¹² = 427675903 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 (427679099) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50342 + ... + 58220.

It is an arithmetic number, because the mean of its divisors is an integer number (29502720).

Almost surely, 2^427679999 is an apocalyptic number.

427679999 is a deficient number, since it is larger than the sum of its proper divisors (44363521).

427679999 is a wasteful number, since it uses less digits than its factorization.

427679999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8030.

The product of its digits is 15431472, while the sum is 62.

The square root of 427679999 is about 20680.4255033595. The cubic root of 427679999 is about 753.4243407991.

The spelling of 427679999 in words is "four hundred twenty-seven million, six hundred seventy-nine thousand, nine hundred ninety-nine".