49998679 has 4 divisors (see below), whose sum is σ = 50091640.
Its totient is φ = 49905720.
The previous prime is 49998661. The next prime is 49998727. The reversal of 49998679 is 97689994.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97689994 = 2 ⋅48844997.
It is a cyclic number.
It is not a de Polignac number, because 49998679 - 29 = 49998167 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 (49998659) 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, 45669 + ... + 46750.
It is an arithmetic number, because the mean of its divisors is an integer number (12522910).
Almost surely, 249998679 is an apocalyptic number.
49998679 is a deficient number, since it is larger than the sum of its proper divisors (92961).
49998679 is an equidigital number, since it uses as much as digits as its factorization.
49998679 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 92960.
The product of its digits is 8817984, while the sum is 61.
The square root of 49998679 is about 7070.9744024427.
The cubic root of 49998679 is about 368.3999054317.
The spelling of 49998679 in words is "forty-nine million, nine hundred ninety-eight thousand, six hundred seventy-nine".