3991529228354 has 16 divisors (see below), whose sum is σ = 6385761237528. Its totient is φ = 1864655987712.

The previous prime is 3991529228299. The next prime is 3991529228387. The reversal of 3991529228354 is 4538229251993.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3958599682129 + 32929546225 = 1989623^2 + 181465^2 .

It is a super-4 number, since 4×3991529228354⁴ (a number of 52 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 428454899 + ... + 428464214.

Almost surely, 2^{3991529228354} is an apocalyptic number.

3991529228354 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

3991529228354 is a deficient number, since it is larger than the sum of its proper divisors (2394232009174).

3991529228354 is a wasteful number, since it uses less digits than its factorization.

3991529228354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856919269.

The product of its digits is 41990400, while the sum is 62.

The spelling of 3991529228354 in words is "three trillion, nine hundred ninety-one billion, five hundred twenty-nine million, two hundred twenty-eight thousand, three hundred fifty-four".