427999999 has 8 divisors (see below), whose sum is σ = 496032768. Its totient is φ = 361689720.

The previous prime is 427999991. The next prime is 428000003. The reversal of 427999999 is 999999724.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 427999999 - 2³ = 427999991 is a prime.

427999999 is a modest number, since divided by 99999 gives 4279 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427999991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 430087 + ... + 431080.

It is an arithmetic number, because the mean of its divisors is an integer number (62004096).

Almost surely, 2^427999999 is an apocalyptic number.

427999999 is a deficient number, since it is larger than the sum of its proper divisors (68032769).

427999999 is an equidigital number, since it uses as much as digits as its factorization.

427999999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861245.

The product of its digits is 29760696, while the sum is 67.

The square root of 427999999 is about 20688.1608414088. The cubic root of 427999999 is about 753.6122037523.

The spelling of 427999999 in words is "four hundred twenty-seven million, nine hundred ninety-nine thousand, nine hundred ninety-nine".