2899990561 has 8 divisors (see below), whose sum is σ = 3123638784. Its totient is φ = 2676424080.

The previous prime is 2899990549. The next prime is 2899990567. The reversal of 2899990561 is 1650999982.

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

It is a cyclic number.

It is not a de Polignac number, because 2899990561 - 2⁷ = 2899990433 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2899990496 and 2899990505.

It is not an unprimeable number, because it can be changed into a prime (2899990567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67200 + ... + 101566.

It is an arithmetic number, because the mean of its divisors is an integer number (390454848).

Almost surely, 2^2899990561 is an apocalyptic number.

It is an amenable number.

2899990561 is a deficient number, since it is larger than the sum of its proper divisors (223648223).

2899990561 is a wasteful number, since it uses less digits than its factorization.

2899990561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40871.

The product of its (nonzero) digits is 3149280, while the sum is 58.

The square root of 2899990561 is about 53851.5604323589. The cubic root of 2899990561 is about 1426.0415999659.

The spelling of 2899990561 in words is "two billion, eight hundred ninety-nine million, nine hundred ninety thousand, five hundred sixty-one".