427259861 has 12 divisors (see below), whose sum is σ = 526253868. Its totient is φ = 344679552.

The previous prime is 427259851. The next prime is 427259867. The reversal of 427259861 is 168952724.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 372721636 + 54538225 = 19306^2 + 7385^2 .

It is not a de Polignac number, because 427259861 - 2¹⁰ = 427258837 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427259867) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 255626 + ... + 257291.

It is an arithmetic number, because the mean of its divisors is an integer number (43854489).

Almost surely, 2^427259861 is an apocalyptic number.

It is an amenable number.

427259861 is a deficient number, since it is larger than the sum of its proper divisors (98994007).

427259861 is a wasteful number, since it uses less digits than its factorization.

427259861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512948 (or 512941 counting only the distinct ones).

The product of its digits is 241920, while the sum is 44.

The square root of 427259861 is about 20670.2651410184. The cubic root of 427259861 is about 753.1775473193.

The spelling of 427259861 in words is "four hundred twenty-seven million, two hundred fifty-nine thousand, eight hundred sixty-one".