49998613 has 4 divisors (see below), whose sum is σ = 57141280. Its totient is φ = 42855948.

The previous prime is 49998601. The next prime is 49998617. The reversal of 49998613 is 31689994.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49998613 is a prime.

It is a super-2 number, since 2×49998613² = 4999722603847538, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49998617) 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, 3571323 + ... + 3571336.

It is an arithmetic number, because the mean of its divisors is an integer number (14285320).

Almost surely, 2^49998613 is an apocalyptic number.

It is an amenable number.

49998613 is a deficient number, since it is larger than the sum of its proper divisors (7142667).

49998613 is an equidigital number, since it uses as much as digits as its factorization.

49998613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7142666.

The product of its digits is 419904, while the sum is 49.

The square root of 49998613 is about 7070.9697354748. The cubic root of 49998613 is about 368.3997433314.

The spelling of 49998613 in words is "forty-nine million, nine hundred ninety-eight thousand, six hundred thirteen".