908947990 has 16 divisors (see below), whose sum is σ = 1644675840. Its totient is φ = 361674880.

The previous prime is 908947981. The next prime is 908947997. The reversal of 908947990 is 99749809.

908947990 is digitally balanced in base 2 and base 6, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (908947997) 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, 236035 + ... + 239854.

It is an arithmetic number, because the mean of its divisors is an integer number (102792240).

Almost surely, 2^908947990 is an apocalyptic number.

908947990 is a deficient number, since it is larger than the sum of its proper divisors (735727850).

908947990 is a wasteful number, since it uses less digits than its factorization.

908947990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476087.

The product of its (nonzero) digits is 1469664, while the sum is 55.

The square root of 908947990 is about 30148.7643196201. The cubic root of 908947990 is about 968.6785385233.

The spelling of 908947990 in words is "nine hundred eight million, nine hundred forty-seven thousand, nine hundred ninety".