948721990 has 16 divisors (see below), whose sum is σ = 1717928352. Its totient is φ = 377215744.

The previous prime is 948721883. The next prime is 948721993. The reversal of 948721990 is 99127849.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (948721993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282379 + ... + 285718.

It is an arithmetic number, because the mean of its divisors is an integer number (107370522).

Almost surely, 2^948721990 is an apocalyptic number.

948721990 is a deficient number, since it is larger than the sum of its proper divisors (769206362).

948721990 is a wasteful number, since it uses less digits than its factorization.

948721990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568271.

The product of its (nonzero) digits is 326592, while the sum is 49.

The square root of 948721990 is about 30801.3309777354. The cubic root of 948721990 is about 982.6065519914.

The spelling of 948721990 in words is "nine hundred forty-eight million, seven hundred twenty-one thousand, nine hundred ninety".