785464129 has 4 divisors (see below), whose sum is σ = 788384340. Its totient is φ = 782543920.

The previous prime is 785464111. The next prime is 785464151. The reversal of 785464129 is 921464587.

785464129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 48233025 + 737231104 = 6945^2 + 27152^2 .

It is a cyclic number.

It is not a de Polignac number, because 785464129 - 2⁹ = 785463617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (785464189) 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, 1459702 + ... + 1460239.

It is an arithmetic number, because the mean of its divisors is an integer number (197096085).

Almost surely, 2^785464129 is an apocalyptic number.

It is an amenable number.

785464129 is a deficient number, since it is larger than the sum of its proper divisors (2920211).

785464129 is a wasteful number, since it uses less digits than its factorization.

785464129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2920210.

The product of its digits is 483840, while the sum is 46.

The square root of 785464129 is about 28026.1329655020. The cubic root of 785464129 is about 922.6609043097.

The spelling of 785464129 in words is "seven hundred eighty-five million, four hundred sixty-four thousand, one hundred twenty-nine".