49977831 has 8 divisors (see below), whose sum is σ = 66730240. Its totient is φ = 33271992.

The previous prime is 49977803. The next prime is 49977839. The reversal of 49977831 is 13877994.

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

It is not a de Polignac number, because 49977831 - 2¹⁴ = 49961447 is a prime.

It is a super-2 number, since 2×49977831² = 4995567182929122, which contains 22 as substring.

It is the 7070-th Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49977839) by changing a digit.

It is a nontrivial repunit in base 7069.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9055 + ... + 13488.

It is an arithmetic number, because the mean of its divisors is an integer number (8341280).

Almost surely, 2^49977831 is an apocalyptic number.

49977831 is a deficient number, since it is larger than the sum of its proper divisors (16752409).

49977831 is a wasteful number, since it uses less digits than its factorization.

49977831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23285.

The product of its digits is 381024, while the sum is 48.

The square root of 49977831 is about 7069.5000530448. The cubic root of 49977831 is about 368.3486942855.

The spelling of 49977831 in words is "forty-nine million, nine hundred seventy-seven thousand, eight hundred thirty-one".