1187479749 has 8 divisors (see below), whose sum is σ = 1583704192. Its totient is φ = 791454240.

The previous prime is 1187479747. The next prime is 1187479753. The reversal of 1187479749 is 9479747811.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1187479749 - 2¹ = 1187479747 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 (1187479747) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 35197 + ... + 60114.

It is an arithmetic number, because the mean of its divisors is an integer number (197963024).

Almost surely, 2^1187479749 is an apocalyptic number.

It is an amenable number.

1187479749 is a deficient number, since it is larger than the sum of its proper divisors (396224443).

1187479749 is an equidigital number, since it uses as much as digits as its factorization.

1187479749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99467.

The product of its digits is 3556224, while the sum is 57.

The square root of 1187479749 is about 34459.8280465820. The cubic root of 1187479749 is about 1058.9498764040.

The spelling of 1187479749 in words is "one billion, one hundred eighty-seven million, four hundred seventy-nine thousand, seven hundred forty-nine".