290948881 has 8 divisors (see below), whose sum is σ = 309421280. Its totient is φ = 272792448.

The previous prime is 290948869. The next prime is 290949007. The reversal of 290948881 is 188849092.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 290948881 - 2⁵ = 290948849 is a prime.

It is a super-2 number, since 2×290948881² = 169302502710304322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (290948821) 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, 77091 + ... + 80776.

It is an arithmetic number, because the mean of its divisors is an integer number (38677660).

Almost surely, 2^290948881 is an apocalyptic number.

It is an amenable number.

290948881 is a deficient number, since it is larger than the sum of its proper divisors (18472399).

290948881 is a wasteful number, since it uses less digits than its factorization.

290948881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157983.

The product of its (nonzero) digits is 331776, while the sum is 49.

The square root of 290948881 is about 17057.2237189995. The cubic root of 290948881 is about 662.6317334338.

The spelling of 290948881 in words is "two hundred ninety million, nine hundred forty-eight thousand, eight hundred eighty-one".