498912881 has 4 divisors (see below), whose sum is σ = 501054372. Its totient is φ = 496771392.

The previous prime is 498912877. The next prime is 498912893. The reversal of 498912881 is 188219894.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 188219894 = 2 ⋅94109947.

It can be written as a sum of positive squares in 2 ways, for example, as 71250481 + 427662400 = 8441^2 + 20680^2 .

It is a cyclic number.

It is not a de Polignac number, because 498912881 - 2² = 498912877 is a prime.

It is a super-2 number, since 2×498912881² = 497828125655440322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (498912871) 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, 1070396 + ... + 1070861.

It is an arithmetic number, because the mean of its divisors is an integer number (125263593).

Almost surely, 2^498912881 is an apocalyptic number.

It is an amenable number.

498912881 is a deficient number, since it is larger than the sum of its proper divisors (2141491).

498912881 is a wasteful number, since it uses less digits than its factorization.

498912881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2141490.

The product of its digits is 331776, while the sum is 50.

The square root of 498912881 is about 22336.3578275421. The cubic root of 498912881 is about 793.1248773018.

The spelling of 498912881 in words is "four hundred ninety-eight million, nine hundred twelve thousand, eight hundred eighty-one".