49877689 has 4 divisors (see below), whose sum is σ = 51094260. Its totient is φ = 48661120.

The previous prime is 49877671. The next prime is 49877693. The reversal of 49877689 is 98677894.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5721664 + 44156025 = 2392^2 + 6645^2 .

It is a cyclic number.

It is not a de Polignac number, because 49877689 - 2⁷ = 49877561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49877629) 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, 608224 + ... + 608305.

It is an arithmetic number, because the mean of its divisors is an integer number (12773565).

Almost surely, 2^49877689 is an apocalyptic number.

It is an amenable number.

49877689 is a deficient number, since it is larger than the sum of its proper divisors (1216571).

49877689 is a wasteful number, since it uses less digits than its factorization.

49877689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1216570.

The product of its digits is 6096384, while the sum is 58.

The square root of 49877689 is about 7062.4138224831. The cubic root of 49877689 is about 368.1025061993.

It can be divided in two parts, 498 and 77689, that added together give a palindrome (78187).

The spelling of 49877689 in words is "forty-nine million, eight hundred seventy-seven thousand, six hundred eighty-nine".