3924404121 has 16 divisors (see below), whose sum is σ = 5709835008. Its totient is φ = 2377755600.

The previous prime is 3924404119. The next prime is 3924404123. The reversal of 3924404121 is 1214044293.

3924404121 is a nontrivial binomial coefficient, being equal to C(88594, 2).

It is an interprime number because it is at equal distance from previous prime (3924404119) and next prime (3924404123).

It is not a de Polignac number, because 3924404121 - 2¹ = 3924404119 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3924404123) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 118126 + ... + 147656.

It is an arithmetic number, because the mean of its divisors is an integer number (356864688).

Almost surely, 2^3924404121 is an apocalyptic number.

3924404121 is the 88593-rd triangular number and also the 44297-th hexagonal number.

It is an amenable number.

3924404121 is a deficient number, since it is larger than the sum of its proper divisors (1785430887).

3924404121 is a wasteful number, since it uses less digits than its factorization.

3924404121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33572.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 3924404121 is about 62645.0646180527. The cubic root of 3924404121 is about 1577.3373035175.

The spelling of 3924404121 in words is "three billion, nine hundred twenty-four million, four hundred four thousand, one hundred twenty-one".