427427099639 has 4 divisors (see below), whose sum is σ = 452569870224. Its totient is φ = 402284329056.

The previous prime is 427427099633. The next prime is 427427099657. The reversal of 427427099639 is 936990724724.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 427427099639 - 2¹⁶ = 427427034103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427427099633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12571385267 + ... + 12571385300.

It is an arithmetic number, because the mean of its divisors is an integer number (113142467556).

Almost surely, 2^427427099639 is an apocalyptic number.

427427099639 is a deficient number, since it is larger than the sum of its proper divisors (25142770585).

427427099639 is a wasteful number, since it uses less digits than its factorization.

427427099639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25142770584.

The product of its (nonzero) digits is 41150592, while the sum is 62.

The spelling of 427427099639 in words is "four hundred twenty-seven billion, four hundred twenty-seven million, ninety-nine thousand, six hundred thirty-nine".