49999439 has 8 divisors (see below), whose sum is σ = 57203328. Its totient is φ = 42810840.

The previous prime is 49999427. The next prime is 49999441. The reversal of 49999439 is 93499994.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 49999439 - 2⁴ = 49999423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49999409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4364 + ... + 10910.

It is an arithmetic number, because the mean of its divisors is an integer number (7150416).

Almost surely, 2^49999439 is an apocalyptic number.

49999439 is a deficient number, since it is larger than the sum of its proper divisors (7203889).

49999439 is a wasteful number, since it uses less digits than its factorization.

49999439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7645.

The product of its digits is 2834352, while the sum is 56.

The square root of 49999439 is about 7071.0281430638. The cubic root of 49999439 is about 368.4017720311.

The spelling of 49999439 in words is "forty-nine million, nine hundred ninety-nine thousand, four hundred thirty-nine".