990622145 has 8 divisors (see below), whose sum is σ = 1191022656. Its totient is φ = 790980336.

The previous prime is 990622141. The next prime is 990622153. The reversal of 990622145 is 541226099.

990622145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 990622145 - 2² = 990622141 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 990622099 and 990622108.

It is not an unprimeable number, because it can be changed into a prime (990622141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186797 + ... + 192026.

It is an arithmetic number, because the mean of its divisors is an integer number (148877832).

Almost surely, 2^990622145 is an apocalyptic number.

It is an amenable number.

990622145 is a deficient number, since it is larger than the sum of its proper divisors (200400511).

990622145 is a wasteful number, since it uses less digits than its factorization.

990622145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379351.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 990622145 is about 31474.1504253888. The cubic root of 990622145 is about 996.8642255299.

The spelling of 990622145 in words is "nine hundred ninety million, six hundred twenty-two thousand, one hundred forty-five".