990422615 has 16 divisors (see below), whose sum is σ = 1462778688. Its totient is φ = 626904576.

The previous prime is 990422599. The next prime is 990422617. The reversal of 990422615 is 516224099.

990422615 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 990422615 - 2⁴ = 990422599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990422617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1087922 + ... + 1088831.

It is an arithmetic number, because the mean of its divisors is an integer number (91423668).

Almost surely, 2^990422615 is an apocalyptic number.

990422615 is a deficient number, since it is larger than the sum of its proper divisors (472356073).

990422615 is a wasteful number, since it uses less digits than its factorization.

990422615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2176778.

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

The square root of 990422615 is about 31470.9805217442. The cubic root of 990422615 is about 996.7972919449.

The spelling of 990422615 in words is "nine hundred ninety million, four hundred twenty-two thousand, six hundred fifteen".