428199113 has 4 divisors (see below), whose sum is σ = 439772100. Its totient is φ = 416626128.

The previous prime is 428199071. The next prime is 428199173. The reversal of 428199113 is 311991824.

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

It can be written as a sum of positive squares in 2 ways, for example, as 176278729 + 251920384 = 13277^2 + 15872^2 .

It is a cyclic number.

It is not a de Polignac number, because 428199113 - 2¹⁸ = 427936969 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (428199173) 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, 5786438 + ... + 5786511.

It is an arithmetic number, because the mean of its divisors is an integer number (109943025).

Almost surely, 2^428199113 is an apocalyptic number.

It is an amenable number.

428199113 is a deficient number, since it is larger than the sum of its proper divisors (11572987).

428199113 is a wasteful number, since it uses less digits than its factorization.

428199113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11572986.

The product of its digits is 15552, while the sum is 38.

The square root of 428199113 is about 20692.9725510860. The cubic root of 428199113 is about 753.7290506972.

The spelling of 428199113 in words is "four hundred twenty-eight million, one hundred ninety-nine thousand, one hundred thirteen".