9990415412 has 12 divisors (see below), whose sum is σ = 17813099556. Its totient is φ = 4900958400.

The previous prime is 9990415411. The next prime is 9990415427. The reversal of 9990415412 is 2145140999.

It can be written as a sum of positive squares in 2 ways, for example, as 8322183076 + 1668232336 = 91226^2 + 40844^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9990415411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23562089 + ... + 23562512.

It is an arithmetic number, because the mean of its divisors is an integer number (1484424963).

Almost surely, 2^9990415412 is an apocalyptic number.

It is an amenable number.

9990415412 is a deficient number, since it is larger than the sum of its proper divisors (7822684144).

9990415412 is a wasteful number, since it uses less digits than its factorization.

9990415412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47124658 (or 47124656 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 9990415412 is about 99952.0655714528. The cubic root of 9990415412 is about 2153.7461577125.

The spelling of 9990415412 in words is "nine billion, nine hundred ninety million, four hundred fifteen thousand, four hundred twelve".