3909799946 has 16 divisors (see below), whose sum is σ = 6590433024. Its totient is φ = 1726065264.

The previous prime is 3909799889. The next prime is 3909799963. The reversal of 3909799946 is 6499979093.

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, 3268466 + ... + 3269661.

It is an arithmetic number, because the mean of its divisors is an integer number (411902064).

Almost surely, 2^3909799946 is an apocalyptic number.

3909799946 is a deficient number, since it is larger than the sum of its proper divisors (2680633078).

3909799946 is a wasteful number, since it uses less digits than its factorization.

3909799946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6538165.

The product of its (nonzero) digits is 29760696, while the sum is 65.

The square root of 3909799946 is about 62528.3931186465. The cubic root of 3909799946 is about 1575.3782507665.

The spelling of 3909799946 in words is "three billion, nine hundred nine million, seven hundred ninety-nine thousand, nine hundred forty-six".