3934220215 has 4 divisors (see below), whose sum is σ = 4721064264. Its totient is φ = 3147376168.

The previous prime is 3934220209. The next prime is 3934220233. The reversal of 3934220215 is 5120224393.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3934220215 - 2⁵ = 3934220183 is a prime.

It is a super-2 number, since 2×3934220215² = 30956177400229292450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 393422017 + ... + 393422026.

It is an arithmetic number, because the mean of its divisors is an integer number (1180266066).

Almost surely, 2^3934220215 is an apocalyptic number.

3934220215 is a deficient number, since it is larger than the sum of its proper divisors (786844049).

3934220215 is an equidigital number, since it uses as much as digits as its factorization.

3934220215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786844048.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 3934220215 is about 62723.3625932156. The cubic root of 3934220215 is about 1578.6513373805.

The spelling of 3934220215 in words is "three billion, nine hundred thirty-four million, two hundred twenty thousand, two hundred fifteen".