434805986 has 4 divisors (see below), whose sum is σ = 652208982. Its totient is φ = 217402992.

The previous prime is 434805979. The next prime is 434805997. The reversal of 434805986 is 689508434.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 689508434 = 2 ⋅344754217.

It can be written as a sum of positive squares in only one way, i.e., 427703761 + 7102225 = 20681^2 + 2665^2 .

It is a super-2 number, since 2×434805986² = 378112490922864392, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 434805986.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108701495 + ... + 108701498.

Almost surely, 2^434805986 is an apocalyptic number.

434805986 is a deficient number, since it is larger than the sum of its proper divisors (217402996).

434805986 is a wasteful number, since it uses less digits than its factorization.

434805986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217402995.

The product of its (nonzero) digits is 829440, while the sum is 47.

The square root of 434805986 is about 20852.0019662382. The cubic root of 434805986 is about 757.5858215856.

The spelling of 434805986 in words is "four hundred thirty-four million, eight hundred five thousand, nine hundred eighty-six".