3964231686 has 16 divisors (see below), whose sum is σ = 7934036544. Its totient is φ = 1320481704.

The previous prime is 3964231673. The next prime is 3964231697. The reversal of 3964231686 is 6861324693.

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, 222940 + ... + 240063.

It is an arithmetic number, because the mean of its divisors is an integer number (495877284).

Almost surely, 2^3964231686 is an apocalyptic number.

3964231686 is an abundant number, since it is smaller than the sum of its proper divisors (3969804858).

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

3964231686 is a wasteful number, since it uses less digits than its factorization.

3964231686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464435.

The product of its digits is 1119744, while the sum is 48.

The square root of 3964231686 is about 62962.1448649901. The cubic root of 3964231686 is about 1582.6553232339.

The spelling of 3964231686 in words is "three billion, nine hundred sixty-four million, two hundred thirty-one thousand, six hundred eighty-six".