434408739 has 4 divisors (see below), whose sum is σ = 579211656. Its totient is φ = 289605824.

The previous prime is 434408731. The next prime is 434408753. The reversal of 434408739 is 937804434.

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

It is a cyclic number.

It is not a de Polignac number, because 434408739 - 2³ = 434408731 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 434408739.

It is not an unprimeable number, because it can be changed into a prime (434408731) 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, 72401454 + ... + 72401459.

It is an arithmetic number, because the mean of its divisors is an integer number (144802914).

Almost surely, 2^434408739 is an apocalyptic number.

434408739 is a deficient number, since it is larger than the sum of its proper divisors (144802917).

434408739 is a wasteful number, since it uses less digits than its factorization.

434408739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144802916.

The product of its (nonzero) digits is 290304, while the sum is 42.

The square root of 434408739 is about 20842.4743972495. The cubic root of 434408739 is about 757.3550363604.

The spelling of 434408739 in words is "four hundred thirty-four million, four hundred eight thousand, seven hundred thirty-nine".