8463785749 has 4 divisors (see below), whose sum is σ = 8755640460. Its totient is φ = 8171931040.

The previous prime is 8463785723. The next prime is 8463785773. The reversal of 8463785749 is 9475873648.

It is a happy number.

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 3324329649 + 5139456100 = 57657^2 + 71690^2 .

It is a cyclic number.

It is not a de Polignac number, because 8463785749 - 2⁹ = 8463785237 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 (8463785849) 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, 145927312 + ... + 145927369.

It is an arithmetic number, because the mean of its divisors is an integer number (2188910115).

Almost surely, 2^8463785749 is an apocalyptic number.

It is an amenable number.

8463785749 is a deficient number, since it is larger than the sum of its proper divisors (291854711).

8463785749 is a wasteful number, since it uses less digits than its factorization.

8463785749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291854710.

The product of its digits is 40642560, while the sum is 61.

The square root of 8463785749 is about 91998.8355850225. The cubic root of 8463785749 is about 2037.9251097571.

The spelling of 8463785749 in words is "eight billion, four hundred sixty-three million, seven hundred eighty-five thousand, seven hundred forty-nine".