434698639 has 4 divisors (see below), whose sum is σ = 439936056. Its totient is φ = 429461224.

The previous prime is 434698631. The next prime is 434698651. The reversal of 434698639 is 936896434.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 936896434 = 2 ⋅468448217.

It is a cyclic number.

It is not a de Polignac number, because 434698639 - 2³ = 434698631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (434698631) 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, 2618584 + ... + 2618749.

It is an arithmetic number, because the mean of its divisors is an integer number (109984014).

Almost surely, 2^434698639 is an apocalyptic number.

434698639 is a deficient number, since it is larger than the sum of its proper divisors (5237417).

434698639 is an equidigital number, since it uses as much as digits as its factorization.

434698639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5237416.

The product of its digits is 3359232, while the sum is 52.

The square root of 434698639 is about 20849.4277859130. The cubic root of 434698639 is about 757.5234709731.

The spelling of 434698639 in words is "four hundred thirty-four million, six hundred ninety-eight thousand, six hundred thirty-nine".