990350555 has 32 divisors (see below), whose sum is σ = 1284828480. Its totient is φ = 730091520.

The previous prime is 990350539. The next prime is 990350561. The reversal of 990350555 is 555053099.

It is not a de Polignac number, because 990350555 - 2⁴ = 990350539 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2120432 + ... + 2120898.

It is an arithmetic number, because the mean of its divisors is an integer number (40150890).

Almost surely, 2^990350555 is an apocalyptic number.

990350555 is a deficient number, since it is larger than the sum of its proper divisors (294477925).

990350555 is a wasteful number, since it uses less digits than its factorization.

990350555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959.

The product of its (nonzero) digits is 151875, while the sum is 41.

The square root of 990350555 is about 31469.8356366855. The cubic root of 990350555 is about 996.7731167581.

The spelling of 990350555 in words is "nine hundred ninety million, three hundred fifty thousand, five hundred fifty-five".