3939220915 has 16 divisors (see below), whose sum is σ = 5424788160. Its totient is φ = 2689966080.

The previous prime is 3939220877. The next prime is 3939220921. The reversal of 3939220915 is 5190229393.

It is not a de Polignac number, because 3939220915 - 2¹³ = 3939212723 is a prime.

It is a super-2 number, since 2×3939220915² = 31034922834346874450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 225070 + ... + 241939.

It is an arithmetic number, because the mean of its divisors is an integer number (339049260).

Almost surely, 2^3939220915 is an apocalyptic number.

3939220915 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

3939220915 is a deficient number, since it is larger than the sum of its proper divisors (1485567245).

3939220915 is a wasteful number, since it uses less digits than its factorization.

3939220915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467262.

The product of its (nonzero) digits is 131220, while the sum is 43.

The square root of 3939220915 is about 62763.2130710339. The cubic root of 3939220915 is about 1579.3199170811.

The spelling of 3939220915 in words is "three billion, nine hundred thirty-nine million, two hundred twenty thousand, nine hundred fifteen".