3961772129 has 8 divisors (see below), whose sum is σ = 4539881280. Its totient is φ = 3386698416.

The previous prime is 3961772107. The next prime is 3961772153. The reversal of 3961772129 is 9212771693.

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

It is a cyclic number.

It is not a de Polignac number, because 3961772129 - 2²⁴ = 3944994913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3961772189) 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, 756059 + ... + 761280.

It is an arithmetic number, because the mean of its divisors is an integer number (567485160).

Almost surely, 2^3961772129 is an apocalyptic number.

It is an amenable number.

3961772129 is a deficient number, since it is larger than the sum of its proper divisors (578109151).

3961772129 is a wasteful number, since it uses less digits than its factorization.

3961772129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1517719.

The product of its digits is 285768, while the sum is 47.

The square root of 3961772129 is about 62942.6098044878. The cubic root of 3961772129 is about 1582.3279427468.

The spelling of 3961772129 in words is "three billion, nine hundred sixty-one million, seven hundred seventy-two thousand, one hundred twenty-nine".