9990365 has 36 divisors (see below), whose sum is σ = 15374268. Its totient is φ = 6209280.

The previous prime is 9990359. The next prime is 9990389. The reversal of 9990365 is 5630999.

It is a happy number.

9990365 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3136441 + 6853924 = 1771^2 + 2618^2 .

It is not a de Polignac number, because 9990365 - 2¹⁰ = 9989341 is a prime.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 29477 + ... + 29813.

It is an arithmetic number, because the mean of its divisors is an integer number (427063).

Almost surely, 2^9990365 is an apocalyptic number.

It is an amenable number.

9990365 is a deficient number, since it is larger than the sum of its proper divisors (5383903).

9990365 is a wasteful number, since it uses less digits than its factorization.

9990365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378 (or 360 counting only the distinct ones).

The product of its (nonzero) digits is 65610, while the sum is 41.

The square root of 9990365 is about 3160.7538657732. The cubic root of 9990365 is about 215.3742535079.

It can be divided in two parts, 9990 and 365, that multiplied together give a triangular number (3646350 = T₂₇₀₀).

The spelling of 9990365 in words is "nine million, nine hundred ninety thousand, three hundred sixty-five".