2909947946 has 16 divisors (see below), whose sum is σ = 4413225600. Its totient is φ = 1438961040.

The previous prime is 2909947939. The next prime is 2909947961. The reversal of 2909947946 is 6497499092.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44576 + ... + 88356.

It is an arithmetic number, because the mean of its divisors is an integer number (275826600).

Almost surely, 2^2909947946 is an apocalyptic number.

2909947946 is a deficient number, since it is larger than the sum of its proper divisors (1503277654).

2909947946 is a wasteful number, since it uses less digits than its factorization.

2909947946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44149.

The product of its (nonzero) digits is 8817984, while the sum is 59.

The square root of 2909947946 is about 53943.9333567733. The cubic root of 2909947946 is about 1427.6718839201.

The spelling of 2909947946 in words is "two billion, nine hundred nine million, nine hundred forty-seven thousand, nine hundred forty-six".