427400999 has 8 divisors (see below), whose sum is σ = 441458688. Its totient is φ = 413360280.

The previous prime is 427400989. The next prime is 427401011. The reversal of 427400999 is 999004724.

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

It is a cyclic number.

It is not a de Polignac number, because 427400999 - 2⁴ = 427400983 is a prime.

It is a super-2 number, since 2×427400999² = 365343227892396002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427400959) 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, 65294 + ... + 71540.

It is an arithmetic number, because the mean of its divisors is an integer number (55182336).

Almost surely, 2^427400999 is an apocalyptic number.

427400999 is a deficient number, since it is larger than the sum of its proper divisors (14057689).

427400999 is a wasteful number, since it uses less digits than its factorization.

427400999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8485.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 427400999 is about 20673.6788937044. The cubic root of 427400999 is about 753.2604713034.

The spelling of 427400999 in words is "four hundred twenty-seven million, four hundred thousand, nine hundred ninety-nine".