49999391 has 8 divisors (see below), whose sum is σ = 53912544. Its totient is φ = 46095840.

The previous prime is 49999387. The next prime is 49999403. The reversal of 49999391 is 19399994.

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

It is a cyclic number.

It is not a de Polignac number, because 49999391 - 2² = 49999387 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 (49999351) 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, 11390 + ... + 15156.

It is an arithmetic number, because the mean of its divisors is an integer number (6739068).

Almost surely, 2^49999391 is an apocalyptic number.

49999391 is a deficient number, since it is larger than the sum of its proper divisors (3913153).

49999391 is a wasteful number, since it uses less digits than its factorization.

49999391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4801.

The product of its digits is 708588, while the sum is 53.

The square root of 49999391 is about 7071.0247489314. The cubic root of 49999391 is about 368.4016541412.

The spelling of 49999391 in words is "forty-nine million, nine hundred ninety-nine thousand, three hundred ninety-one".