785238479 has 4 divisors (see below), whose sum is σ = 826566840. Its totient is φ = 743910120.

The previous prime is 785238431. The next prime is 785238499. The reversal of 785238479 is 974832587.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 974832587 = 79 ⋅12339653.

It is a cyclic number.

It is not a de Polignac number, because 785238479 - 2¹² = 785234383 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 785238479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (785238499) 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, 20664152 + ... + 20664189.

It is an arithmetic number, because the mean of its divisors is an integer number (206641710).

Almost surely, 2^785238479 is an apocalyptic number.

785238479 is a deficient number, since it is larger than the sum of its proper divisors (41328361).

785238479 is a wasteful number, since it uses less digits than its factorization.

785238479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41328360.

The product of its digits is 3386880, while the sum is 53.

The square root of 785238479 is about 28022.1069693198. The cubic root of 785238479 is about 922.5725411090.

The spelling of 785238479 in words is "seven hundred eighty-five million, two hundred thirty-eight thousand, four hundred seventy-nine".