49939971 has 4 divisors (see below), whose sum is σ = 66586632. Its totient is φ = 33293312.

The previous prime is 49939963. The next prime is 49939979. The reversal of 49939971 is 17993994.

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

It is an interprime number because it is at equal distance from previous prime (49939963) and next prime (49939979).

It is a cyclic number.

It is not a de Polignac number, because 49939971 - 2³ = 49939963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (49939979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8323326 + ... + 8323331.

It is an arithmetic number, because the mean of its divisors is an integer number (16646658).

Almost surely, 2^49939971 is an apocalyptic number.

49939971 is a deficient number, since it is larger than the sum of its proper divisors (16646661).

49939971 is a wasteful number, since it uses less digits than its factorization.

49939971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16646660.

The product of its digits is 551124, while the sum is 51.

The square root of 49939971 is about 7066.8218457805. The cubic root of 49939971 is about 368.2556583386.

It can be divided in two parts, 499 and 39971, that added together give a triangular number (40470 = T₂₈₄).

The spelling of 49939971 in words is "forty-nine million, nine hundred thirty-nine thousand, nine hundred seventy-one".