1199740505 has 4 divisors (see below), whose sum is σ = 1439688612. Its totient is φ = 959792400.

The previous prime is 1199740481. The next prime is 1199740547. The reversal of 1199740505 is 5050479911.

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 372142681 + 827597824 = 19291^2 + 28768^2 .

It is not a de Polignac number, because 1199740505 - 2¹⁰ = 1199739481 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119974046 + ... + 119974055.

It is an arithmetic number, because the mean of its divisors is an integer number (359922153).

Almost surely, 2^1199740505 is an apocalyptic number.

It is an amenable number.

1199740505 is a deficient number, since it is larger than the sum of its proper divisors (239948107).

1199740505 is an equidigital number, since it uses as much as digits as its factorization.

1199740505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239948106.

The product of its (nonzero) digits is 56700, while the sum is 41.

The square root of 1199740505 is about 34637.2704611665. The cubic root of 1199740505 is about 1062.5819651646.

The spelling of 1199740505 in words is "one billion, one hundred ninety-nine million, seven hundred forty thousand, five hundred five".