298908623 has 4 divisors (see below), whose sum is σ = 321901608. Its totient is φ = 275915640.

The previous prime is 298908593. The next prime is 298908661. The reversal of 298908623 is 326809892.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 298908623 - 2⁶ = 298908559 is a prime.

It is a super-2 number, since 2×298908623² = 178692729807512258, 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 (298908223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11496473 + ... + 11496498.

It is an arithmetic number, because the mean of its divisors is an integer number (80475402).

Almost surely, 2^298908623 is an apocalyptic number.

298908623 is a deficient number, since it is larger than the sum of its proper divisors (22992985).

298908623 is a wasteful number, since it uses less digits than its factorization.

298908623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22992984.

The product of its (nonzero) digits is 373248, while the sum is 47.

The square root of 298908623 is about 17288.9740297104. The cubic root of 298908623 is about 668.6201817713.

The spelling of 298908623 in words is "two hundred ninety-eight million, nine hundred eight thousand, six hundred twenty-three".