498617391 has 16 divisors (see below), whose sum is σ = 698805504. Its totient is φ = 315632064.

The previous prime is 498617381. The next prime is 498617393. The reversal of 498617391 is 193716894.

It is a happy number.

It is not a de Polignac number, because 498617391 - 2⁹ = 498616879 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 498617391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (498617393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16921 + ... + 35826.

It is an arithmetic number, because the mean of its divisors is an integer number (43675344).

Almost surely, 2^498617391 is an apocalyptic number.

498617391 is a deficient number, since it is larger than the sum of its proper divisors (200188113).

498617391 is a wasteful number, since it uses less digits than its factorization.

498617391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52910.

The product of its digits is 326592, while the sum is 48.

The square root of 498617391 is about 22329.7422958708. The cubic root of 498617391 is about 792.9682656219.

The spelling of 498617391 in words is "four hundred ninety-eight million, six hundred seventeen thousand, three hundred ninety-one".