3991254122 has 8 divisors (see below), whose sum is σ = 6068893476. Its totient is φ = 1968289632.

The previous prime is 3991254097. The next prime is 3991254131. The reversal of 3991254122 is 2214521993.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3672238801 + 319015321 = 60599^2 + 17861^2 .

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, 13668533 + ... + 13668824.

Almost surely, 2^3991254122 is an apocalyptic number.

3991254122 is a deficient number, since it is larger than the sum of its proper divisors (2077639354).

3991254122 is a wasteful number, since it uses less digits than its factorization.

3991254122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27337432.

The product of its digits is 38880, while the sum is 38.

The square root of 3991254122 is about 63176.3731311002. The cubic root of 3991254122 is about 1586.2432730802.

It can be divided in two parts, 399 and 1254122, that added together give a palindrome (1254521).

The spelling of 3991254122 in words is "three billion, nine hundred ninety-one million, two hundred fifty-four thousand, one hundred twenty-two".