1047764749 has 4 divisors (see below), whose sum is σ = 1070057664. Its totient is φ = 1025471836.

The previous prime is 1047764743. The next prime is 1047764819. The reversal of 1047764749 is 9474677401.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1047764749 - 2³ = 1047764741 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 a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1047764741) 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, 11146387 + ... + 11146480.

It is an arithmetic number, because the mean of its divisors is an integer number (267514416).

Almost surely, 2^1047764749 is an apocalyptic number.

It is an amenable number.

1047764749 is a deficient number, since it is larger than the sum of its proper divisors (22292915).

1047764749 is an equidigital number, since it uses as much as digits as its factorization.

1047764749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22292914.

The product of its (nonzero) digits is 1185408, while the sum is 49.

The square root of 1047764749 is about 32369.1944447186. The cubic root of 1047764749 is about 1015.6746060113.

The spelling of 1047764749 in words is "one billion, forty-seven million, seven hundred sixty-four thousand, seven hundred forty-nine".