990622146 has 16 divisors (see below), whose sum is σ = 1984770144. Its totient is φ = 329619744.

The previous prime is 990622141. The next prime is 990622153. The reversal of 990622146 is 641226099.

990622146 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×990622146² = 1962664472291290632, which contains 22 as substring.

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, 143251 + ... + 150006.

It is an arithmetic number, because the mean of its divisors is an integer number (124048134).

Almost surely, 2^990622146 is an apocalyptic number.

990622146 is an abundant number, since it is smaller than the sum of its proper divisors (994147998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

990622146 is a wasteful number, since it uses less digits than its factorization.

990622146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293825.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 990622146 is about 31474.1504412748. The cubic root of 990622146 is about 996.8642258653.

The spelling of 990622146 in words is "nine hundred ninety million, six hundred twenty-two thousand, one hundred forty-six".