3961855434 has 32 divisors (see below), whose sum is σ = 8031772224. Its totient is φ = 1302658560.

The previous prime is 3961855427. The next prime is 3961855441. The reversal of 3961855434 is 4345581693.

3961855434 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3961855427) and next prime (3961855441).

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, 329244 + ... + 341064.

It is an arithmetic number, because the mean of its divisors is an integer number (250992882).

Almost surely, 2^3961855434 is an apocalyptic number.

3961855434 is an abundant number, since it is smaller than the sum of its proper divisors (4069916790).

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

3961855434 is a wasteful number, since it uses less digits than its factorization.

3961855434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12582.

The product of its digits is 1555200, while the sum is 48.

The square root of 3961855434 is about 62943.2715546308. The cubic root of 3961855434 is about 1582.3390333145.

The spelling of 3961855434 in words is "three billion, nine hundred sixty-one million, eight hundred fifty-five thousand, four hundred thirty-four".