2147920469 has 4 divisors (see below), whose sum is σ = 2148152460. Its totient is φ = 2147688480.

The previous prime is 2147920459. The next prime is 2147920483. The reversal of 2147920469 is 9640297412.

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 258888100 + 1889032369 = 16090^2 + 43463^2 .

It is a cyclic number.

It is not a de Polignac number, because 2147920469 - 2¹² = 2147916373 is a prime.

It is a super-2 number, since 2×2147920469² = 9227124682298359922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2147920459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101504 + ... + 120825.

It is an arithmetic number, because the mean of its divisors is an integer number (537038115).

Almost surely, 2^2147920469 is an apocalyptic number.

It is an amenable number.

2147920469 is a deficient number, since it is larger than the sum of its proper divisors (231991).

2147920469 is an equidigital number, since it uses as much as digits as its factorization.

2147920469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231990.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 2147920469 is about 46345.6628930907. The cubic root of 2147920469 is about 1290.2466265236.

The spelling of 2147920469 in words is "two billion, one hundred forty-seven million, nine hundred twenty thousand, four hundred sixty-nine".