49999039 has 4 divisors (see below), whose sum is σ = 50208480. Its totient is φ = 49789600.

The previous prime is 49999031. The next prime is 49999069. The reversal of 49999039 is 93099994.

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 49999039 - 2³ = 49999031 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 (49999031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104362 + ... + 104839.

It is an arithmetic number, because the mean of its divisors is an integer number (12552120).

Almost surely, 2^49999039 is an apocalyptic number.

49999039 is a deficient number, since it is larger than the sum of its proper divisors (209441).

49999039 is a wasteful number, since it uses less digits than its factorization.

49999039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209440.

The product of its (nonzero) digits is 708588, while the sum is 52.

The square root of 49999039 is about 7070.9998585773. Note that the first 3 decimals coincide. The cubic root of 49999039 is about 368.4007896127.

The spelling of 49999039 in words is "forty-nine million, nine hundred ninety-nine thousand, thirty-nine".