49999799 has 4 divisors (see below), whose sum is σ = 51723960. Its totient is φ = 48275640.

The previous prime is 49999783. The next prime is 49999801. The reversal of 49999799 is 99799994.

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 49999799 - 2⁴ = 49999783 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 (49999739) 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, 862037 + ... + 862094.

It is an arithmetic number, because the mean of its divisors is an integer number (12930990).

Almost surely, 2^49999799 is an apocalyptic number.

49999799 is a deficient number, since it is larger than the sum of its proper divisors (1724161).

49999799 is a wasteful number, since it uses less digits than its factorization.

49999799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1724160.

The product of its digits is 14880348, while the sum is 65.

The square root of 49999799 is about 7071.0535990049. The cubic root of 49999799 is about 368.4026562032.

It can be divided in two parts, 49 and 999799, that multiplied together give a triangular number (48990151 = T₉₈₉₈).

The spelling of 49999799 in words is "forty-nine million, nine hundred ninety-nine thousand, seven hundred ninety-nine".