990943154 has 8 divisors (see below), whose sum is σ = 1498119168. Its totient is φ = 491570100.

The previous prime is 990943147. The next prime is 990943169. The reversal of 990943154 is 451349099.

It is a happy number.

990943154 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 an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1950422 + ... + 1950929.

It is an arithmetic number, because the mean of its divisors is an integer number (187264896).

Almost surely, 2^990943154 is an apocalyptic number.

990943154 is a deficient number, since it is larger than the sum of its proper divisors (507176014).

990943154 is a wasteful number, since it uses less digits than its factorization.

990943154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3901480.

The product of its (nonzero) digits is 174960, while the sum is 44.

The square root of 990943154 is about 31479.2495780951. The cubic root of 990943154 is about 996.9718911455.

The spelling of 990943154 in words is "nine hundred ninety million, nine hundred forty-three thousand, one hundred fifty-four".