2887890469 has 4 divisors (see below), whose sum is σ = 2894560396. Its totient is φ = 2881220544.

The previous prime is 2887890461. The next prime is 2887890479. The reversal of 2887890469 is 9640987882.

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 1763160100 + 1124730369 = 41990^2 + 33537^2 .

It is a cyclic number.

It is not a de Polignac number, because 2887890469 - 2³ = 2887890461 is a prime.

It is a super-2 number, since 2×2887890469² = 16679822721882079922, 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 (2887890461) 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, 3334314 + ... + 3335179.

It is an arithmetic number, because the mean of its divisors is an integer number (723640099).

Almost surely, 2^2887890469 is an apocalyptic number.

It is an amenable number.

2887890469 is a deficient number, since it is larger than the sum of its proper divisors (6669927).

2887890469 is an equidigital number, since it uses as much as digits as its factorization.

2887890469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6669926.

The product of its (nonzero) digits is 13934592, while the sum is 61.

The square root of 2887890469 is about 53739.0962800827. The cubic root of 2887890469 is about 1424.0554682989.

The spelling of 2887890469 in words is "two billion, eight hundred eighty-seven million, eight hundred ninety thousand, four hundred sixty-nine".