498727391 has 4 divisors (see below), whose sum is σ = 498775512. Its totient is φ = 498679272.

The previous prime is 498727381. The next prime is 498727417. The reversal of 498727391 is 193727894.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 193727894 = 2 ⋅96863947.

It is a cyclic number.

It is not a de Polignac number, because 498727391 - 2¹⁴ = 498711007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (498727381) 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, 1400 + ... + 31613.

It is an arithmetic number, because the mean of its divisors is an integer number (124693878).

Almost surely, 2^498727391 is an apocalyptic number.

498727391 is a deficient number, since it is larger than the sum of its proper divisors (48121).

498727391 is a wasteful number, since it uses less digits than its factorization.

498727391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48120.

The product of its digits is 762048, while the sum is 50.

The square root of 498727391 is about 22332.2052426535. The cubic root of 498727391 is about 793.0265735866.

The spelling of 498727391 in words is "four hundred ninety-eight million, seven hundred twenty-seven thousand, three hundred ninety-one".