434781407 has 4 divisors (see below), whose sum is σ = 434823720. Its totient is φ = 434739096.

The previous prime is 434781401. The next prime is 434781439. The reversal of 434781407 is 704187434.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-434781407 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 (434781401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5213 + ... + 29945.

It is an arithmetic number, because the mean of its divisors is an integer number (108705930).

Almost surely, 2^434781407 is an apocalyptic number.

434781407 is a deficient number, since it is larger than the sum of its proper divisors (42313).

434781407 is a wasteful number, since it uses less digits than its factorization.

434781407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42312.

The product of its (nonzero) digits is 75264, while the sum is 38.

The square root of 434781407 is about 20851.4125900381. The cubic root of 434781407 is about 757.5715462127.

The spelling of 434781407 in words is "four hundred thirty-four million, seven hundred eighty-one thousand, four hundred seven".