3969451189 has 4 divisors (see below), whose sum is σ = 4330310400. Its totient is φ = 3608591980.

The previous prime is 3969451151. The next prime is 3969451201. The reversal of 3969451189 is 9811549693.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3969451189 - 2³¹ = 1821967541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3969451489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180429589 + ... + 180429610.

It is an arithmetic number, because the mean of its divisors is an integer number (1082577600).

Almost surely, 2^3969451189 is an apocalyptic number.

It is an amenable number.

3969451189 is a deficient number, since it is larger than the sum of its proper divisors (360859211).

3969451189 is a wasteful number, since it uses less digits than its factorization.

3969451189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360859210.

The product of its digits is 2099520, while the sum is 55.

The square root of 3969451189 is about 63003.5807633185. The cubic root of 3969451189 is about 1583.3496192994.

The spelling of 3969451189 in words is "three billion, nine hundred sixty-nine million, four hundred fifty-one thousand, one hundred eighty-nine".