3891329426 has 8 divisors (see below), whose sum is σ = 5843622204. Its totient is φ = 1943455360.

The previous prime is 3891329399. The next prime is 3891329437. The reversal of 3891329426 is 6249231983.

It can be written as a sum of positive squares in 2 ways, for example, as 3654323401 + 237006025 = 60451^2 + 15395^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1102475 + ... + 1105998.

Almost surely, 2^3891329426 is an apocalyptic number.

3891329426 is a deficient number, since it is larger than the sum of its proper divisors (1952292778).

3891329426 is a wasteful number, since it uses less digits than its factorization.

3891329426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2209356.

The product of its digits is 559872, while the sum is 47.

The square root of 3891329426 is about 62380.5212065433. The cubic root of 3891329426 is about 1572.8935543780.

The spelling of 3891329426 in words is "three billion, eight hundred ninety-one million, three hundred twenty-nine thousand, four hundred twenty-six".