5511989749 has 4 divisors (see below), whose sum is σ = 6299416864. Its totient is φ = 4724562636.

The previous prime is 5511989723. The next prime is 5511989773. The reversal of 5511989749 is 9479891155.

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 5511989749 - 2¹³ = 5511981557 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5511989693 and 5511989702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5511989779) 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, 393713547 + ... + 393713560.

It is an arithmetic number, because the mean of its divisors is an integer number (1574854216).

Almost surely, 2^5511989749 is an apocalyptic number.

It is an amenable number.

5511989749 is a deficient number, since it is larger than the sum of its proper divisors (787427115).

5511989749 is an equidigital number, since it uses as much as digits as its factorization.

5511989749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 787427114.

The product of its digits is 4082400, while the sum is 58.

The square root of 5511989749 is about 74242.7757360944. The cubic root of 5511989749 is about 1766.4559031153.

The spelling of 5511989749 in words is "five billion, five hundred eleven million, nine hundred eighty-nine thousand, seven hundred forty-nine".