3891049436 has 24 divisors (see below), whose sum is σ = 6898542336. Its totient is φ = 1920173040.

The previous prime is 3891049433. The next prime is 3891049457. The reversal of 3891049436 is 6349401983.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3891049433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99215 + ... + 132761.

It is an arithmetic number, because the mean of its divisors is an integer number (287439264).

Almost surely, 2^3891049436 is an apocalyptic number.

It is an amenable number.

3891049436 is a deficient number, since it is larger than the sum of its proper divisors (3007492900).

3891049436 is a wasteful number, since it uses less digits than its factorization.

3891049436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33929 (or 33927 counting only the distinct ones).

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

The square root of 3891049436 is about 62378.2769560045. The cubic root of 3891049436 is about 1572.8558290507.

The spelling of 3891049436 in words is "three billion, eight hundred ninety-one million, forty-nine thousand, four hundred thirty-six".