428086244089 has 27 divisors (see below), whose sum is σ = 502108741701. Its totient is φ = 363912204600.

The previous prime is 428086244057. The next prime is 428086244101. The reversal of 428086244089 is 980442680824.

It is a happy number.

The square root of 428086244089 is 654283.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 428086244089 - 2⁵ = 428086244057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (428086284089) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 691576822 + ... + 691577440.

It is an arithmetic number, because the mean of its divisors is an integer number (18596620063).

Almost surely, 2^428086244089 is an apocalyptic number.

428086244089 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

428086244089 is the 654283-rd square number.

428086244089 is the 327142-nd centered octagonal number.

It is an amenable number.

428086244089 is a deficient number, since it is larger than the sum of its proper divisors (74022497612).

428086244089 is an frugal number, since it uses more digits than its factorization.

428086244089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1554 (or 777 counting only the distinct ones).

The product of its (nonzero) digits is 7077888, while the sum is 55.

It can be divided in two parts, 4280 and 86244089, that added together give a square (86248369 = 9287²).

The spelling of 428086244089 in words is "four hundred twenty-eight billion, eighty-six million, two hundred forty-four thousand, eighty-nine".