49699871 has 4 divisors (see below), whose sum is σ = 53522952. Its totient is φ = 45876792.

The previous prime is 49699817. The next prime is 49699879. The reversal of 49699871 is 17899694.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-49699871 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 (49699879) 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, 1911521 + ... + 1911546.

It is an arithmetic number, because the mean of its divisors is an integer number (13380738).

Almost surely, 2^49699871 is an apocalyptic number.

49699871 is a deficient number, since it is larger than the sum of its proper divisors (3823081).

49699871 is a wasteful number, since it uses less digits than its factorization.

49699871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3823080.

The product of its digits is 979776, while the sum is 53.

The square root of 49699871 is about 7049.8135436336. The cubic root of 49699871 is about 367.6645469193.

The spelling of 49699871 in words is "forty-nine million, six hundred ninety-nine thousand, eight hundred seventy-one".