49997859 has 4 divisors (see below), whose sum is σ = 66663816. Its totient is φ = 33331904.

The previous prime is 49997821. The next prime is 49997869. The reversal of 49997859 is 95879994.

It is a happy number.

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 49997859 - 2¹¹ = 49995811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (49997809) 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, 8332974 + ... + 8332979.

It is an arithmetic number, because the mean of its divisors is an integer number (16665954).

Almost surely, 2^49997859 is an apocalyptic number.

49997859 is a deficient number, since it is larger than the sum of its proper divisors (16665957).

49997859 is a wasteful number, since it uses less digits than its factorization.

49997859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16665956.

The product of its digits is 7348320, while the sum is 60.

The square root of 49997859 is about 7070.9164186829. The cubic root of 49997859 is about 368.3978914480.

The spelling of 49997859 in words is "forty-nine million, nine hundred ninety-seven thousand, eight hundred fifty-nine".