49983981 has 8 divisors (see below), whose sum is σ = 66724320. Its totient is φ = 33283152.

The previous prime is 49983971. The next prime is 49984007. The reversal of 49983981 is 18938994.

It is a happy number.

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

It is not a de Polignac number, because 49983981 - 2⁶ = 49983917 is a prime.

It is a super-2 number, since 2×49983981² = 4996796713216722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49983971) by changing a digit.

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, 6786 + ... + 12083.

It is an arithmetic number, because the mean of its divisors is an integer number (8340540).

Almost surely, 2^49983981 is an apocalyptic number.

It is an amenable number.

49983981 is a deficient number, since it is larger than the sum of its proper divisors (16740339).

49983981 is a wasteful number, since it uses less digits than its factorization.

49983981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19755.

The product of its digits is 559872, while the sum is 51.

The square root of 49983981 is about 7069.9350067734. The cubic root of 49983981 is about 368.3638026613.

The spelling of 49983981 in words is "forty-nine million, nine hundred eighty-three thousand, nine hundred eighty-one".