427207208869 has 4 divisors (see below), whose sum is σ = 488236810144. Its totient is φ = 366177607596.

The previous prime is 427207208851. The next prime is 427207208881. The reversal of 427207208869 is 968802702724.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 427207208869 - 2¹⁷ = 427207077797 is a prime.

It is a super-2 number, since 2×427207208869² (a number of 24 digits) 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 (427207208899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30514800627 + ... + 30514800640.

It is an arithmetic number, because the mean of its divisors is an integer number (122059202536).

Almost surely, 2^427207208869 is an apocalyptic number.

It is an amenable number.

427207208869 is a deficient number, since it is larger than the sum of its proper divisors (61029601275).

427207208869 is an equidigital number, since it uses as much as digits as its factorization.

427207208869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61029601274.

The product of its (nonzero) digits is 5419008, while the sum is 55.

The spelling of 427207208869 in words is "four hundred twenty-seven billion, two hundred seven million, two hundred eight thousand, eight hundred sixty-nine".