785270749 has 4 divisors (see below), whose sum is σ = 831463164. Its totient is φ = 739078336.

The previous prime is 785270747. The next prime is 785270767. The reversal of 785270749 is 947072587.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 947072587 = 23 ⋅41177069.

It can be written as a sum of positive squares in 2 ways, for example, as 591365124 + 193905625 = 24318^2 + 13925^2 .

It is a cyclic number.

It is not a de Polignac number, because 785270749 - 2¹ = 785270747 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (785270743) 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, 23096182 + ... + 23096215.

It is an arithmetic number, because the mean of its divisors is an integer number (207865791).

Almost surely, 2^785270749 is an apocalyptic number.

It is an amenable number.

785270749 is a deficient number, since it is larger than the sum of its proper divisors (46192415).

785270749 is a wasteful number, since it uses less digits than its factorization.

785270749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46192414.

The product of its (nonzero) digits is 987840, while the sum is 49.

The square root of 785270749 is about 28022.6827587938. The cubic root of 785270749 is about 922.5851788867.

The spelling of 785270749 in words is "seven hundred eighty-five million, two hundred seventy thousand, seven hundred forty-nine".