2909199970 has 32 divisors (see below), whose sum is σ = 5568879600. Its totient is φ = 1090430976.

The previous prime is 2909199961. The next prime is 2909199971. The reversal of 2909199970 is 799919092.

It is a Cunningham number, because it is equal to 53937²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 2264903281 + 644296689 = 47591^2 + 25383^2 .

It is not an unprimeable number, because it can be changed into a prime (2909199971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1566 + ... + 76294.

Almost surely, 2^2909199970 is an apocalyptic number.

2909199970 is a deficient number, since it is larger than the sum of its proper divisors (2659679630).

2909199970 is a wasteful number, since it uses less digits than its factorization.

2909199970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74982.

The product of its (nonzero) digits is 826686, while the sum is 55.

The square root of 2909199970 is about 53937.0000092701. Note that the first 5 decimals coincide. The cubic root of 2909199970 is about 1427.5495500235.

The spelling of 2909199970 in words is "two billion, nine hundred nine million, one hundred ninety-nine thousand, nine hundred seventy".