3998401629 has 16 divisors (see below), whose sum is σ = 5674852800. Its totient is φ = 2496928896.

The previous prime is 3998401577. The next prime is 3998401639. The reversal of 3998401629 is 9261048993.

It is not a de Polignac number, because 3998401629 - 2¹³ = 3998393437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3998401639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 389014 + ... + 399159.

It is an arithmetic number, because the mean of its divisors is an integer number (354678300).

Almost surely, 2^3998401629 is an apocalyptic number.

It is an amenable number.

3998401629 is a deficient number, since it is larger than the sum of its proper divisors (1676451171).

3998401629 is a wasteful number, since it uses less digits than its factorization.

3998401629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788284.

The product of its (nonzero) digits is 839808, while the sum is 51.

The square root of 3998401629 is about 63232.9157085137. The cubic root of 3998401629 is about 1587.1895858150.

The spelling of 3998401629 in words is "three billion, nine hundred ninety-eight million, four hundred one thousand, six hundred twenty-nine".