3924391220 has 24 divisors (see below), whose sum is σ = 8245214208. Its totient is φ = 1568996000.

The previous prime is 3924391213. The next prime is 3924391249. The reversal of 3924391220 is 221934293.

It is a super-2 number, since 2×3924391220² = 30801692895226176800, which contains 22 as substring.

It is a congruent number.

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, 4256 + ... + 88695.

It is an arithmetic number, because the mean of its divisors is an integer number (343550592).

Almost surely, 2^3924391220 is an apocalyptic number.

It is an amenable number.

3924391220 is an abundant number, since it is smaller than the sum of its proper divisors (4320822988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3924391220 is a wasteful number, since it uses less digits than its factorization.

3924391220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95071 (or 95069 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 3924391220 is about 62644.9616489626. The cubic root of 3924391220 is about 1577.3355750809.

The spelling of 3924391220 in words is "three billion, nine hundred twenty-four million, three hundred ninety-one thousand, two hundred twenty".