3998401630 has 8 divisors (see below), whose sum is σ = 7197122952. Its totient is φ = 1599360648.

The previous prime is 3998401577. The next prime is 3998401639. The reversal of 3998401630 is 361048993.

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

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 3 ways as a sum of consecutive naturals, for example, 199920072 + ... + 199920091.

It is an arithmetic number, because the mean of its divisors is an integer number (899640369).

Almost surely, 2^3998401630 is an apocalyptic number.

3998401630 is a deficient number, since it is larger than the sum of its proper divisors (3198721322).

3998401630 is a wasteful number, since it uses less digits than its factorization.

3998401630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399840170.

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 3998401630 is about 63232.9157164210. The cubic root of 3998401630 is about 1587.1895859473.

The spelling of 3998401630 in words is "three billion, nine hundred ninety-eight million, four hundred one thousand, six hundred thirty".