298423981 has 8 divisors (see below), whose sum is σ = 306825984. Its totient is φ = 290039760.

The previous prime is 298423901. The next prime is 298423991. The reversal of 298423981 is 189324892.

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 298423981 - 2⁹ = 298423469 is a prime.

It is a super-2 number, since 2×298423981² = 178113744871776722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (298423901) 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, 34236 + ... + 42058.

It is an arithmetic number, because the mean of its divisors is an integer number (38353248).

Almost surely, 2^298423981 is an apocalyptic number.

It is an amenable number.

298423981 is a deficient number, since it is larger than the sum of its proper divisors (8402003).

298423981 is a wasteful number, since it uses less digits than its factorization.

298423981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8891.

The product of its digits is 248832, while the sum is 46.

The square root of 298423981 is about 17274.9524167217. The cubic root of 298423981 is about 668.2586256683.

The spelling of 298423981 in words is "two hundred ninety-eight million, four hundred twenty-three thousand, nine hundred eighty-one".