1172047988 has 12 divisors (see below), whose sum is σ = 2054288292. Its totient is φ = 585108480.

The previous prime is 1172047979. The next prime is 1172047991. The reversal of 1172047988 is 8897402711.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 458730724 + 713317264 = 21418^2 + 26708^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225995 + ... + 231122.

It is an arithmetic number, because the mean of its divisors is an integer number (171190691).

Almost surely, 2^1172047988 is an apocalyptic number.

It is an amenable number.

1172047988 is a deficient number, since it is larger than the sum of its proper divisors (882240304).

1172047988 is a wasteful number, since it uses less digits than its factorization.

1172047988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457762 (or 457760 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 47.

The square root of 1172047988 is about 34235.1864022967. The cubic root of 1172047988 is about 1054.3427059565.

The spelling of 1172047988 in words is "one billion, one hundred seventy-two million, forty-seven thousand, nine hundred eighty-eight".