9912038402 has 54 divisors (see below), whose sum is σ = 17648176923. Its totient is φ = 4163115264.

The previous prime is 9912038401. The next prime is 9912038419. The reversal of 9912038402 is 2048302199.

It can be written as a sum of positive squares in 5 ways, for example, as 386083201 + 9525955201 = 19649^2 + 97601^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=70399.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9912038401) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 87717098 + ... + 87717210.

Almost surely, 2^9912038402 is an apocalyptic number.

9912038402 is a deficient number, since it is larger than the sum of its proper divisors (7736138521).

9912038402 is an equidigital number, since it uses as much as digits as its factorization.

9912038402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420 (or 211 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 9912038402 is about 99559.2205775035. The cubic root of 9912038402 is about 2148.0991601788.

The spelling of 9912038402 in words is "nine billion, nine hundred twelve million, thirty-eight thousand, four hundred two".