498855139 has 4 divisors (see below), whose sum is σ = 499186800. Its totient is φ = 498523480.

The previous prime is 498855107. The next prime is 498855163. The reversal of 498855139 is 931558894.

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

It is a cyclic number.

It is not a de Polignac number, because 498855139 - 2⁵ = 498855107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (498855439) 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, 163564 + ... + 166585.

It is an arithmetic number, because the mean of its divisors is an integer number (124796700).

Almost surely, 2^498855139 is an apocalyptic number.

498855139 is a deficient number, since it is larger than the sum of its proper divisors (331661).

498855139 is a wasteful number, since it uses less digits than its factorization.

498855139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331660.

The product of its digits is 1555200, while the sum is 52.

The square root of 498855139 is about 22335.0652338425. The cubic root of 498855139 is about 793.0942785171.

The spelling of 498855139 in words is "four hundred ninety-eight million, eight hundred fifty-five thousand, one hundred thirty-nine".